libnl 3.5.0

nl-class-add.c
1 /* SPDX-License-Identifier: LGPL-2.1-only */
2 /*
3 * src/nl-class-add.c Add/Update/Replace Traffic Class
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) 2010 Thomas Graf <tgraf@suug.ch>
11 */
12
13 #include <netlink/cli/utils.h>
14 #include <netlink/cli/tc.h>
15 #include <netlink/cli/qdisc.h>
16 #include <netlink/cli/class.h>
17 #include <netlink/cli/link.h>
18
19 #include <netlink-private/route/tc-api.h>
20
21 #include <linux/netlink.h>
22
23 static int quiet = 0;
24
25 static void print_usage(void)
26 {
27 printf(
28 "Usage: nl-class-add [OPTIONS]... class [CONFIGURATION]...\n"
29 "\n"
30 "OPTIONS\n"
31 " -q, --quiet Do not print informal notifications.\n"
32 " -h, --help Show this help text.\n"
33 " -v, --version Show versioning information.\n"
34 " --update Update class if it exists.\n"
35 " --update-only Only update class, never create it.\n"
36 " -d, --dev=DEV Network device the class should be attached to.\n"
37 " -i, --id=ID ID of new class (default: auto-generated)\n"
38 " -p, --parent=ID ID of parent { root | ingress | class-ID }\n"
39 " --mtu=SIZE Overwrite MTU (default: MTU of network device)\n"
40 " --mpu=SIZE Minimum packet size on the link (default: 0).\n"
41 " --overhead=SIZE Overhead in bytes per packet (default: 0).\n"
42 " --linktype=TYPE Overwrite linktype (default: type of network device)\n"
43 "\n"
44 "CONFIGURATION\n"
45 " -h, --help Show help text of class specific options.\n"
46 "\n"
47 "EXAMPLE\n"
48 " $ nl-class-add --dev=eth1 --parent=root htb --rate=100mbit\n"
49 "\n"
50 );
51 exit(0);
52 }
53
54 int main(int argc, char *argv[])
55 {
56 struct nl_sock *sock;
57 struct rtnl_class *class;
58 struct rtnl_tc *tc;
59 struct nl_cache *link_cache;
60 struct nl_dump_params dp = {
61 .dp_type = NL_DUMP_DETAILS,
62 .dp_fd = stdout,
63 };
64 struct nl_cli_tc_module *tm;
65 struct rtnl_tc_ops *ops;
66 int err, flags = NLM_F_CREATE | NLM_F_EXCL;
67 char *kind, *id = NULL;
68
69 sock = nl_cli_alloc_socket();
70 nl_cli_connect(sock, NETLINK_ROUTE);
71
72 link_cache = nl_cli_link_alloc_cache(sock);
73
74 class = nl_cli_class_alloc();
75 tc = (struct rtnl_tc *) class;
76
77 for (;;) {
78 int c, optidx = 0;
79 enum {
80 ARG_UPDATE = 257,
81 ARG_UPDATE_ONLY = 258,
82 ARG_MTU,
83 ARG_MPU,
84 ARG_OVERHEAD,
85 ARG_LINKTYPE,
86 };
87 static struct option long_opts[] = {
88 { "quiet", 0, 0, 'q' },
89 { "help", 0, 0, 'h' },
90 { "version", 0, 0, 'v' },
91 { "dev", 1, 0, 'd' },
92 { "parent", 1, 0, 'p' },
93 { "id", 1, 0, 'i' },
94 { "update", 0, 0, ARG_UPDATE },
95 { "update-only", 0, 0, ARG_UPDATE_ONLY },
96 { "mtu", 1, 0, ARG_MTU },
97 { "mpu", 1, 0, ARG_MPU },
98 { "overhead", 1, 0, ARG_OVERHEAD },
99 { "linktype", 1, 0, ARG_LINKTYPE },
100 { 0, 0, 0, 0 }
101 };
102
103 c = getopt_long(argc, argv, "+qhvd:p:i:",
104 long_opts, &optidx);
105 if (c == -1)
106 break;
107
108 switch (c) {
109 case 'q': quiet = 1; break;
110 case 'h': print_usage(); break;
111 case 'v': nl_cli_print_version(); break;
112 case 'd': nl_cli_tc_parse_dev(tc, link_cache, optarg); break;
113 case 'p': nl_cli_tc_parse_parent(tc, optarg); break;
114 case 'i': id = strdup(optarg); break;
115 case ARG_UPDATE: flags = NLM_F_CREATE; break;
116 case ARG_UPDATE_ONLY: flags = 0; break;
117 case ARG_MTU: nl_cli_tc_parse_mtu(tc, optarg); break;
118 case ARG_MPU: nl_cli_tc_parse_mpu(tc, optarg); break;
119 case ARG_OVERHEAD: nl_cli_tc_parse_overhead(tc, optarg); break;
120 case ARG_LINKTYPE: nl_cli_tc_parse_linktype(tc, optarg); break;
121 }
122 }
123
124 if (optind >= argc)
125 print_usage();
126
127 if (!rtnl_tc_get_ifindex(tc))
128 nl_cli_fatal(EINVAL, "You must specify a network device (--dev=XXX)");
129
130 if (!rtnl_tc_get_parent(tc))
131 nl_cli_fatal(EINVAL, "You must specify a parent (--parent=XXX)");
132
133 if (id) {
134 nl_cli_tc_parse_handle(tc, id, 1);
135 free(id);
136 }
137
138 kind = argv[optind++];
139 rtnl_tc_set_kind(tc, kind);
140
141 if (!(ops = rtnl_tc_get_ops(tc)))
142 nl_cli_fatal(ENOENT, "Unknown class \"%s\"", kind);
143
144 if (!(tm = nl_cli_tc_lookup(ops)))
145 nl_cli_fatal(ENOTSUP, "class type \"%s\" not supported.", kind);
146
147 tm->tm_parse_argv(tc, argc, argv);
148
149 if (!quiet) {
150 printf("Adding ");
151 nl_object_dump(OBJ_CAST(class), &dp);
152 }
153
154 if ((err = rtnl_class_add(sock, class, flags)) < 0)
155 nl_cli_fatal(EINVAL, "Unable to add class: %s", nl_geterror(err));
156
157 return 0;
158 }
rtnl_tc_set_kind
int rtnl_tc_set_kind(struct rtnl_tc *tc, const char *kind)
Define the type of traffic control object.
Definition: tc.c:530
nl_dump_params::dp_type
enum nl_dump_type dp_type
Specifies the type of dump that is requested.
Definition: types.h:38
NL_DUMP_DETAILS
Dump all attributes but no statistics.
Definition: types.h:23
nl_object_dump
void nl_object_dump(struct nl_object *obj, struct nl_dump_params *params)
Dump this object according to the specified parameters.
Definition: object.c:289
nl_cli_tc_module
Definition: tc.h:28
rtnl_tc_get_parent
uint32_t rtnl_tc_get_parent(struct rtnl_tc *tc)
Return parent identifier of a traffic control object.
Definition: tc.c:518
rtnl_class_add
int rtnl_class_add(struct nl_sock *sk, struct rtnl_class *class, int flags)
Add/Update traffic class.
Definition: class.c:172
nl_cli_fatal
void nl_cli_fatal(int err, const char *fmt,...)
Print error message and quit application.
Definition: utils.c:78
nl_dump_params
Dumping parameters.
Definition: types.h:33
rtnl_tc_get_ifindex
int rtnl_tc_get_ifindex(struct rtnl_tc *tc)
Return interface index of traffic control object.
Definition: tc.c:294