cgroup.c

/*
 * lib/cli/cls/cgroup.c         cgroup classifier module for CLI lib
 *
 *      This library is free software; you can redistribute it and/or
 *      modify it under the terms of the GNU Lesser General Public
 *      License as published by the Free Software Foundation version 2.1
 *      of the License.
 *
 * Copyright (c) 2010-2011 Thomas Graf <tgraf@suug.ch>
 */

#include <netlink/cli/utils.h>
#include <netlink/cli/tc.h>
#include <netlink/cli/cls.h>
#include <netlink/route/cls/cgroup.h>

static void print_usage(void)
{
        printf(
"Usage: nl-cls-add [...] cgroup [OPTIONS]...\n"
"\n"
"OPTIONS\n"
" -h, --help                Show this help text.\n"
" -e, --ematch=EXPR         Ematch expression\n"
"\n"
"EXAMPLE"
"    nl-cls-add --dev=eth0 --parent=q_root cgroup\n");
}

static void parse_argv(struct rtnl_tc *tc, int argc, char **argv)
{
        struct rtnl_cls *cls = (struct rtnl_cls *) tc;
        struct rtnl_ematch_tree *tree;

        for (;;) {
                int c, optidx = 0;
                static struct option long_opts[] = {
                        { "help", 0, 0, 'h' },
                        { "ematch", 1, 0, 'e' },
                        { 0, 0, 0, 0 }
                };
        
                c = getopt_long(argc, argv, "he:", long_opts, &optidx);
                if (c == -1)
                        break;

                switch (c) {
                case 'h':
                        print_usage();
                        exit(0);

                case 'e':
                        tree = nl_cli_cls_parse_ematch(cls, optarg);
                        rtnl_cgroup_set_ematch(cls, tree);
                        break;
                }
        }
}

static struct nl_cli_tc_module cgroup_module =
{
        .tm_name                = "cgroup",
        .tm_type                = RTNL_TC_TYPE_CLS,
        .tm_parse_argv          = parse_argv,
};

static void __init cgroup_init(void)
{
        nl_cli_tc_register(&cgroup_module);
}

static void __exit cgroup_exit(void)
{
        nl_cli_tc_unregister(&cgroup_module);
}