libnl  3.2.24-rc1
nl-cls-add.c
1 /*
2  * src/nl-cls-add.c Add classifier
3  *
4  * This library is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU General Public License as
6  * published by the Free Software Foundation version 2 of the License.
7  *
8  * Copyright (c) 2003-2011 Thomas Graf <tgraf@suug.ch>
9  */
10 
11 #include <netlink/cli/utils.h>
12 #include <netlink/cli/tc.h>
13 #include <netlink/cli/cls.h>
14 #include <netlink/cli/link.h>
15 
16 #include <netlink-private/route/tc-api.h>
17 
18 static int quiet = 0;
19 
20 static void print_usage(void)
21 {
22  printf(
23 "Usage: nl-cls-add [OPTIONS]... classifier [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 classifier if it exists.\n"
30 " --update-only Only update classifier, never create it.\n"
31 " -d, --dev=DEV Network device the classifier should be attached to.\n"
32 " -i, --id=ID ID of new classifier (default: auto-generated)\n"
33 " -p, --parent=ID ID of parent { root | ingress | class-ID }\n"
34 " --protocol=PROTO Protocol to match (default: all)\n"
35 " --prio=PRIO Priority (default: 0)\n"
36 " --mtu=SIZE Overwrite MTU (default: MTU of network device)\n"
37 " --mpu=SIZE Minimum packet size on the link (default: 0).\n"
38 " --overhead=SIZE Overhead in bytes per packet (default: 0).\n"
39 " --linktype=TYPE Overwrite linktype (default: type of network device)\n"
40 "\n"
41 "CONFIGURATION\n"
42 " -h, --help Show help text of classifier specific options.\n"
43 "\n"
44 "EXAMPLE\n"
45 " $ nl-cls-add --dev=eth1 --parent=q_root basic --target c_www\n"
46 "\n"
47  );
48  exit(0);
49 }
50 
51 int main(int argc, char *argv[])
52 {
53  struct nl_sock *sock;
54  struct rtnl_cls *cls;
55  struct rtnl_tc *tc;
56  struct nl_cache *link_cache;
57  struct nl_dump_params dp = {
59  .dp_fd = stdout,
60  };
61  struct nl_cli_tc_module *tm;
62  struct rtnl_tc_ops *ops;
63  int err, flags = NLM_F_CREATE | NLM_F_EXCL;
64  char *kind, *id = NULL;
65 
66  sock = nl_cli_alloc_socket();
67  nl_cli_connect(sock, NETLINK_ROUTE);
68 
69  link_cache = nl_cli_link_alloc_cache(sock);
70 
71  cls = nl_cli_cls_alloc();
72  tc = (struct rtnl_tc *) cls;
73 
74  for (;;) {
75  int c, optidx = 0;
76  enum {
77  ARG_UPDATE = 257,
78  ARG_UPDATE_ONLY = 258,
79  ARG_MTU,
80  ARG_MPU,
81  ARG_OVERHEAD,
82  ARG_LINKTYPE,
83  ARG_PROTO,
84  ARG_PRIO,
85  };
86  static struct option long_opts[] = {
87  { "quiet", 0, 0, 'q' },
88  { "help", 0, 0, 'h' },
89  { "version", 0, 0, 'v' },
90  { "dev", 1, 0, 'd' },
91  { "parent", 1, 0, 'p' },
92  { "id", 1, 0, 'i' },
93  { "proto", 1, 0, ARG_PROTO },
94  { "prio", 1, 0, ARG_PRIO },
95  { "update", 0, 0, ARG_UPDATE },
96  { "update-only", 0, 0, ARG_UPDATE_ONLY },
97  { "mtu", 1, 0, ARG_MTU },
98  { "mpu", 1, 0, ARG_MPU },
99  { "overhead", 1, 0, ARG_OVERHEAD },
100  { "linktype", 1, 0, ARG_LINKTYPE },
101  { 0, 0, 0, 0 }
102  };
103 
104  c = getopt_long(argc, argv, "+qhvd:p:i:",
105  long_opts, &optidx);
106  if (c == -1)
107  break;
108 
109  switch (c) {
110  case 'q': quiet = 1; break;
111  case 'h': print_usage(); break;
112  case 'v': nl_cli_print_version(); break;
113  case 'd': nl_cli_tc_parse_dev(tc, link_cache, optarg); break;
114  case 'p': nl_cli_tc_parse_parent(tc, optarg); break;
115  case 'i': id = strdup(optarg); break;
116  case ARG_UPDATE: flags = NLM_F_CREATE; break;
117  case ARG_UPDATE_ONLY: flags = 0; break;
118  case ARG_MTU: nl_cli_tc_parse_mtu(tc, optarg); break;
119  case ARG_MPU: nl_cli_tc_parse_mpu(tc, optarg); break;
120  case ARG_OVERHEAD: nl_cli_tc_parse_overhead(tc, optarg); break;
121  case ARG_LINKTYPE: nl_cli_tc_parse_linktype(tc, optarg); break;
122  case ARG_PROTO: nl_cli_cls_parse_proto(cls, optarg); break;
123  case ARG_PRIO:
124  rtnl_cls_set_prio(cls, nl_cli_parse_u32(optarg));
125  break;
126  }
127  }
128 
129  if (optind >= argc)
130  print_usage();
131 
132  if (!rtnl_tc_get_ifindex(tc))
133  nl_cli_fatal(EINVAL, "You must specify a network device (--dev=XXX)");
134 
135  if (!rtnl_tc_get_parent(tc))
136  nl_cli_fatal(EINVAL, "You must specify a parent (--parent=XXX)");
137 
138  if (id) {
139  nl_cli_tc_parse_handle(tc, id, 1);
140  free(id);
141  }
142 
143  kind = argv[optind++];
144  rtnl_tc_set_kind(tc, kind);
145 
146  if (!(ops = rtnl_tc_get_ops(tc)))
147  nl_cli_fatal(ENOENT, "Unknown classifier \"%s\".", kind);
148 
149  if (!(tm = nl_cli_tc_lookup(ops)))
150  nl_cli_fatal(ENOTSUP, "Classifier type \"%s\" not supported.", kind);
151 
152  tm->tm_parse_argv(tc, argc, argv);
153 
154  if (!quiet) {
155  printf("Adding ");
156  nl_object_dump(OBJ_CAST(cls), &dp);
157  }
158 
159  if ((err = rtnl_cls_add(sock, cls, flags)) < 0)
160  nl_cli_fatal(EINVAL, "Unable to add classifier: %s", nl_geterror(err));
161 
162  return 0;
163 }