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basic.c

/*
 * src/cls/basic.c      Basic Classifier
 *
 *    This library is free software; you can redistribute it and/or
 *    modify it under the terms of the GNU General Public License as
 *    published by the Free Software Foundation version 2 of the License.
 *
 * Copyright (c) 2008 Thomas Graf <tgraf@suug.ch>
 */

#include "utils.h"
#include <netlink/route/cls/basic.h>
#include <netlink/route/cls/ematch.h>

static void print_usage(void)
{
      printf(
"Usage: ... basic [OPTIONS]...\n"
"\n"
"Options\n"
" -h, --help                Show this help.\n"
" -e, --ematch=MATCH        Extended match (See --ematch help).\n"
" -c, --classid=HANDLE      Target class to classify matching packets to.\n"
      );
      exit(0);
}

static void basic_parse_argv(struct rtnl_cls *cls, int argc, char **argv)
{
      uint32_t classid;

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

            switch (c) {
            case '?':
                  exit(NLE_INVAL);

            case 'h':
                  print_usage();

            case 'e':
#if 0
                  if ((err = parse_ematch_syntax(optarg, &tree)) < 0)
                        fatal(err, "Error while parsing ematch: %s",
                              nl_geterror(err));

                  if ((err = rtnl_basic_set_ematch(cls, tree)) < 0)
                        fatal(err, "Unable to set ematch: %s",
                              nl_geterror(err));
#endif
                  break;

            case 'c':
                  if ((err = rtnl_tc_str2handle(optarg, &classid)) < 0)
                        fatal(err, "Invalid classid \"%s\": %s",
                              optarg, nl_geterror(err));
                        
                  if ((err = rtnl_basic_set_classid(cls, classid)) < 0)
                        fatal(err, "Unable to set classid: %s",
                              nl_geterror(err));
                  break;
            }
      }
}

static struct cls_module basic_module = {
      .name       = "basic",
      .parse_argv = basic_parse_argv,
};

static void __attribute__ ((constructor)) basic_init(void)
{
      register_cls_module(&basic_module);
}

static void __attribute__ ((destructor)) basic_exit(void)
{
      unregister_cls_module(&basic_module);
}

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