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      1 /*
      2  * src/cls/basic.c	Basic 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) 2008 Thomas Graf <tgraf (at) suug.ch>
      9  */
     10 
     11 #include "utils.h"
     12 #include <netlink/route/cls/basic.h>
     13 #include <netlink/route/cls/ematch.h>
     14 
     15 static void print_usage(void)
     16 {
     17 	printf(
     18 "Usage: ... basic [OPTIONS]...\n"
     19 "\n"
     20 "Options\n"
     21 " -h, --help                Show this help.\n"
     22 " -e, --ematch=MATCH        Extended match (See --ematch help).\n"
     23 " -c, --classid=HANDLE      Target class to classify matching packets to.\n"
     24 	);
     25 	exit(0);
     26 }
     27 
     28 static void basic_parse_argv(struct rtnl_cls *cls, int argc, char **argv)
     29 {
     30 	uint32_t classid;
     31 
     32 	for (;;) {
     33 		int c, optidx = 0, err;
     34 		static struct option long_opts[] = {
     35 			{ "help", 0, 0, 'h' },
     36 			{ "ematch", 1, 0, 'e' },
     37 			{ "classid", 1, 0, 'c' },
     38 			{ 0, 0, 0, 0 }
     39 		};
     40 
     41 		c = getopt_long(argc, argv, "he:c:", long_opts, &optidx);
     42 		if (c == -1)
     43 			break;
     44 
     45 		switch (c) {
     46 		case '?':
     47 			exit(NLE_INVAL);
     48 
     49 		case 'h':
     50 			print_usage();
     51 
     52 		case 'e':
     53 #if 0
     54 			if ((err = parse_ematch_syntax(optarg, &tree)) < 0)
     55 				fatal(err, "Error while parsing ematch: %s",
     56 				      nl_geterror(err));
     57 
     58 			if ((err = rtnl_basic_set_ematch(cls, tree)) < 0)
     59 				fatal(err, "Unable to set ematch: %s",
     60 					nl_geterror(err));
     61 #endif
     62 			break;
     63 
     64 		case 'c':
     65 			if ((err = rtnl_tc_str2handle(optarg, &classid)) < 0)
     66 				fatal(err, "Invalid classid \"%s\": %s",
     67 				      optarg, nl_geterror(err));
     68 
     69 			if ((err = rtnl_basic_set_classid(cls, classid)) < 0)
     70 				fatal(err, "Unable to set classid: %s",
     71 				      nl_geterror(err));
     72 			break;
     73 		}
     74  	}
     75 }
     76 
     77 static struct cls_module basic_module = {
     78 	.name		= "basic",
     79 	.parse_argv	= basic_parse_argv,
     80 };
     81 
     82 static void __attribute__ ((constructor)) basic_init(void)
     83 {
     84 	register_cls_module(&basic_module);
     85 }
     86 
     87 static void __attribute__ ((destructor)) basic_exit(void)
     88 {
     89 	unregister_cls_module(&basic_module);
     90 }
     91