libnl: /data/src/libnl3/src/nl-class-add.c Source File

libnl 3.10.0

nl-class-add.c
1/* SPDX-License-Identifier: LGPL-2.1-only */
2/*
3 * Copyright (c) 2010 Thomas Graf <tgraf@suug.ch>
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/class.h>
14#include <netlink/cli/link.h>
15
16#include "nl-priv-dynamic-route/nl-priv-dynamic-route.h"
17
18static int quiet = 0;
19
20static void print_usage(void)
21{
22 printf(
23"Usage: nl-class-add [OPTIONS]... class [CONFIGURATION]...\n"
24"\n"
25"OPTIONS\n"
26" -q, --quiet Do not print informal notifications.\n"
27" -h, --help Show this help text.\n"
28" -v, --version Show versioning information.\n"
29" --update Update class if it exists.\n"
30" --update-only Only update class, never create it.\n"
31" -d, --dev=DEV Network device the class should be attached to.\n"
32" -i, --id=ID ID of new class (default: auto-generated)\n"
33" -p, --parent=ID ID of parent { root | ingress | class-ID }\n"
34" --mtu=SIZE Overwrite MTU (default: MTU of network device)\n"
35" --mpu=SIZE Minimum packet size on the link (default: 0).\n"
36" --overhead=SIZE Overhead in bytes per packet (default: 0).\n"
37" --linktype=TYPE Overwrite linktype (default: type of network device)\n"
38"\n"
39"CONFIGURATION\n"
40" -h, --help Show help text of class specific options.\n"
41"\n"
42"EXAMPLE\n"
43" $ nl-class-add --dev=eth1 --parent=root htb --rate=100mbit\n"
44"\n"
45 );
46 exit(0);
47}
48
49int main(int argc, char *argv[])
50{
51 struct nl_sock *sock;
52 struct rtnl_class *class;
53 struct rtnl_tc *tc;
54 struct nl_cache *link_cache;
55 struct nl_dump_params dp = {
56 .dp_type = NL_DUMP_DETAILS,
57 .dp_fd = stdout,
58 };
59 struct nl_cli_tc_module *tm;
60 struct rtnl_tc_ops *ops;
61 int err, flags = NLM_F_CREATE | NLM_F_EXCL;
62 char *kind, *id = NULL;
63
64 sock = nl_cli_alloc_socket();
65 nl_cli_connect(sock, NETLINK_ROUTE);
66
67 link_cache = nl_cli_link_alloc_cache(sock);
68
69 class = nl_cli_class_alloc();
70 tc = (struct rtnl_tc *) class;
71
72 for (;;) {
73 int c, optidx = 0;
74 enum {
75 ARG_UPDATE = 257,
76 ARG_UPDATE_ONLY = 258,
77 ARG_MTU,
78 ARG_MPU,
79 ARG_OVERHEAD,
80 ARG_LINKTYPE,
81 };
82 static struct option long_opts[] = {
83 { "quiet", 0, 0, 'q' },
84 { "help", 0, 0, 'h' },
85 { "version", 0, 0, 'v' },
86 { "dev", 1, 0, 'd' },
87 { "parent", 1, 0, 'p' },
88 { "id", 1, 0, 'i' },
89 { "update", 0, 0, ARG_UPDATE },
90 { "update-only", 0, 0, ARG_UPDATE_ONLY },
91 { "mtu", 1, 0, ARG_MTU },
92 { "mpu", 1, 0, ARG_MPU },
93 { "overhead", 1, 0, ARG_OVERHEAD },
94 { "linktype", 1, 0, ARG_LINKTYPE },
95 { 0, 0, 0, 0 }
96 };
97
98 c = getopt_long(argc, argv, "+qhvd:p:i:",
99 long_opts, &optidx);
100 if (c == -1)
101 break;
102
103 switch (c) {
104 case 'q': quiet = 1; break;
105 case 'h': print_usage(); break;
106 case 'v': nl_cli_print_version(); break;
107 case 'd': nl_cli_tc_parse_dev(tc, link_cache, optarg); break;
108 case 'p': nl_cli_tc_parse_parent(tc, optarg); break;
109 case 'i': id = strdup(optarg); break;
110 case ARG_UPDATE: flags = NLM_F_CREATE; break;
111 case ARG_UPDATE_ONLY: flags = 0; break;
112 case ARG_MTU: nl_cli_tc_parse_mtu(tc, optarg); break;
113 case ARG_MPU: nl_cli_tc_parse_mpu(tc, optarg); break;
114 case ARG_OVERHEAD: nl_cli_tc_parse_overhead(tc, optarg); break;
115 case ARG_LINKTYPE: nl_cli_tc_parse_linktype(tc, optarg); break;
116 }
117 }
118
119 if (optind >= argc)
120 print_usage();
121
122 if (!rtnl_tc_get_ifindex(tc))
123 nl_cli_fatal(EINVAL, "You must specify a network device (--dev=XXX)");
124
125 if (!rtnl_tc_get_parent(tc))
126 nl_cli_fatal(EINVAL, "You must specify a parent (--parent=XXX)");
127
128 if (id) {
129 nl_cli_tc_parse_handle(tc, id, 1);
130 free(id);
131 }
132
133 kind = argv[optind++];
134 rtnl_tc_set_kind(tc, kind);
135
136 if (!(ops = rtnl_tc_get_ops(tc)))
137 nl_cli_fatal(ENOENT, "Unknown class \"%s\"", kind);
138
139 if (!(tm = nl_cli_tc_lookup(ops)))
140 nl_cli_fatal(ENOTSUP, "class type \"%s\" not supported.", kind);
141
142 tm->tm_parse_argv(tc, argc, argv);
143
144 if (!quiet) {
145 printf("Adding ");
146 nl_object_dump(OBJ_CAST(class), &dp);
147 }
148
149 if ((err = rtnl_class_add(sock, class, flags)) < 0)
150 nl_cli_fatal(EINVAL, "Unable to add class: %s", nl_geterror(err));
151
152 return 0;
153}
rtnl_class_add
int rtnl_class_add(struct nl_sock *sk, struct rtnl_class *class, int flags)
Add/Update traffic class.
Definition class.c:171
nl_cli_fatal
void nl_cli_fatal(int err, const char *fmt,...)
Print error message and quit application.
Definition utils.c:71
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:294
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:516
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:528
rtnl_tc_get_ifindex
int rtnl_tc_get_ifindex(struct rtnl_tc *tc)
Return interface index of traffic control object.
Definition tc.c:292
NL_DUMP_DETAILS
@ NL_DUMP_DETAILS
Dump all attributes but no statistics.
Definition types.h:21
nl_cli_tc_module
Definition tc.h:27
nl_dump_params
Dumping parameters.
Definition types.h:32
nl_dump_params::dp_type
enum nl_dump_type dp_type
Specifies the type of dump that is requested.
Definition types.h:36
rtnl_class
Definition class.c:23
rtnl_tc
Definition nl-route.h:114