lib/cli/cls/cgroup.c

   1 /*
   2  * lib/cli/cls/cgroup.c         cgroup classifier module for CLI lib
   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) 2010-2011 Thomas Graf <tgraf@suug.ch>
  10  */
  11
  12 #include <netlink/cli/utils.h>
  13 #include <netlink/cli/tc.h>
  14 #include <netlink/cli/cls.h>
  15 #include <netlink/route/cls/cgroup.h>
  16
  17 static void print_usage(void)
  18 {
  19         printf(
  20 "Usage: nl-cls-add [...] cgroup [OPTIONS]...\n"
  21 "\n"
  22 "OPTIONS\n"
  23 " -h, --help                Show this help text.\n"
  24 " -e, --ematch=EXPR         Ematch expression\n"
  25 "\n"
  26 "EXAMPLE"
  27 "    nl-cls-add --dev=eth0 --parent=q_root cgroup\n");
  28 }
  29
  30 static void parse_argv(struct rtnl_tc *tc, int argc, char **argv)
  31 {
  32         struct rtnl_cls *cls = (struct rtnl_cls *) tc;
  33         struct rtnl_ematch_tree *tree;
  34
  35         for (;;) {
  36                 int c, optidx = 0;
  37                 static struct option long_opts[] = {
  38                         { "help", 0, 0, 'h' },
  39                         { "ematch", 1, 0, 'e' },
  40                         { 0, 0, 0, 0 }
  41                 };
  42
  43                 c = getopt_long(argc, argv, "he:", long_opts, &optidx);
  44                 if (c == -1)
  45                         break;
  46
  47                 switch (c) {
  48                 case 'h':
  49                         print_usage();
  50                         exit(0);
  51
  52                 case 'e':
  53                         tree = nl_cli_cls_parse_ematch(cls, optarg);
  54                         rtnl_cgroup_set_ematch(cls, tree);
  55                         break;
  56                 }
  57         }
  58 }
  59
  60 static struct nl_cli_tc_module cgroup_module =
  61 {
  62         .tm_name                = "cgroup",
  63         .tm_type                = RTNL_TC_TYPE_CLS,
  64         .tm_parse_argv          = parse_argv,
  65 };
  66
  67 static void __init cgroup_init(void)
  68 {
  69         nl_cli_tc_register(&cgroup_module);
  70 }
  71
  72 static void __exit cgroup_exit(void)
  73 {
  74         nl_cli_tc_unregister(&cgroup_module);
  75 }