libnl  3.2.11
nl-qdisc-add.c
1 /*
2  * src/nl-qdisc-add.c Add Queueing Discipline
3  *
4  * This library is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation version 2.1
7  * of the License.
8  *
9  * Copyright (c) 2010 Thomas Graf <tgraf@suug.ch>
10  */
11 
12 #include <netlink/cli/utils.h>
13 #include <netlink/cli/tc.h>
14 #include <netlink/cli/qdisc.h>
15 #include <netlink/cli/link.h>
16 
17 static int quiet = 0;
18 
19 static void print_usage(void)
20 {
21  printf(
22 "Usage: nl-qdisc-add [OPTIONS]... QDISC [CONFIGURATION]...\n"
23 "\n"
24 "OPTIONS\n"
25 " -q, --quiet Do not print informal notifications.\n"
26 " -h, --help Show this help text.\n"
27 " -v, --version Show versioning information.\n"
28 " --update Update qdisc if it exists.\n"
29 " --replace Replace or update qdisc if it exists.\n"
30 " --update-only Only update qdisc, never create it.\n"
31 " --replace-only Only replace or update qdisc, never create it.\n"
32 " -d, --dev=DEV Network device the qdisc should be attached to.\n"
33 " -i, --id=ID ID of new qdisc (default: auto-generated)r\n"
34 " -p, --parent=ID ID of parent { root | ingress | QDISC-ID }\n"
35 "\n"
36 "CONFIGURATION\n"
37 " -h, --help Show help text of qdisc specific options.\n"
38 "\n"
39 "EXAMPLE\n"
40 " $ nl-qdisc-add --dev=eth1 --parent=root htb --rate=100mbit\n"
41 "\n"
42  );
43  exit(0);
44 }
45 
46 int main(int argc, char *argv[])
47 {
48  struct nl_sock *sock;
49  struct rtnl_qdisc *qdisc;
50  struct rtnl_tc *tc;
51  struct nl_cache *link_cache;
52  struct nl_dump_params dp = {
54  .dp_fd = stdout,
55  };
56  struct nl_cli_tc_module *tm;
57  struct rtnl_tc_ops *ops;
58  int err, flags = NLM_F_CREATE | NLM_F_EXCL;
59  char *kind, *id = NULL;
60 
61  sock = nl_cli_alloc_socket();
62  nl_cli_connect(sock, NETLINK_ROUTE);
63 
64  link_cache = nl_cli_link_alloc_cache(sock);
65 
66  qdisc = nl_cli_qdisc_alloc();
67  tc = (struct rtnl_tc *) qdisc;
68 
69  for (;;) {
70  int c, optidx = 0;
71  enum {
72  ARG_REPLACE = 257,
73  ARG_UPDATE = 258,
74  ARG_REPLACE_ONLY,
75  ARG_UPDATE_ONLY,
76  };
77  static struct option long_opts[] = {
78  { "quiet", 0, 0, 'q' },
79  { "help", 0, 0, 'h' },
80  { "version", 0, 0, 'v' },
81  { "dev", 1, 0, 'd' },
82  { "parent", 1, 0, 'p' },
83  { "id", 1, 0, 'i' },
84  { "replace", 0, 0, ARG_REPLACE },
85  { "update", 0, 0, ARG_UPDATE },
86  { "replace-only", 0, 0, ARG_REPLACE_ONLY },
87  { "update-only", 0, 0, ARG_UPDATE_ONLY },
88  { 0, 0, 0, 0 }
89  };
90 
91  c = getopt_long(argc, argv, "+qhvd:p:i:",
92  long_opts, &optidx);
93  if (c == -1)
94  break;
95 
96  switch (c) {
97  case 'q': quiet = 1; break;
98  case 'h': print_usage(); break;
99  case 'v': nl_cli_print_version(); break;
100  case 'd': nl_cli_tc_parse_dev(tc, link_cache, optarg); break;
101  case 'p': nl_cli_tc_parse_parent(tc, optarg); break;
102  case 'i': id = strdup(optarg); break;
103  case ARG_UPDATE: flags = NLM_F_CREATE; break;
104  case ARG_REPLACE: flags = NLM_F_CREATE | NLM_F_REPLACE; break;
105  case ARG_UPDATE_ONLY: flags = 0; break;
106  case ARG_REPLACE_ONLY: flags = NLM_F_REPLACE; break;
107  }
108  }
109 
110  if (optind >= argc)
111  print_usage();
112 
113  if (!rtnl_tc_get_ifindex(tc))
114  nl_cli_fatal(EINVAL, "You must specify a network device (--dev=XXX)");
115 
116  if (!rtnl_tc_get_parent(tc))
117  nl_cli_fatal(EINVAL, "You must specify a parent");
118 
119  if (id) {
120  nl_cli_tc_parse_handle(tc, id, 1);
121  free(id);
122  }
123 
124  kind = argv[optind++];
125  rtnl_tc_set_kind(tc, kind);
126 
127  if (!(ops = rtnl_tc_get_ops(tc)))
128  nl_cli_fatal(ENOENT, "Unknown qdisc \"%s\"", kind);
129 
130  if (!(tm = nl_cli_tc_lookup(ops)))
131  nl_cli_fatal(ENOTSUP, "Qdisc type \"%s\" not supported.", kind);
132 
133  tm->tm_parse_argv(tc, argc, argv);
134 
135  if (!quiet) {
136  printf("Adding ");
137  nl_object_dump(OBJ_CAST(qdisc), &dp);
138  }
139 
140  if ((err = rtnl_qdisc_add(sock, qdisc, flags)) < 0)
141  nl_cli_fatal(EINVAL, "Unable to add qdisc: %s", nl_geterror(err));
142 
143  return 0;
144 }