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/*
* src/nl-classid-lookup.c Lookup classid
*
* 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 Thomas Graf <tgraf@suug.ch>
*/
#include <netlink/cli/utils.h>
static void print_usage(void)
{
printf(
"Usage: nl-classid-lookup [OPTIONS]... NAME\n"
"\n"
"OPTIONS\n"
" -h, --help Show this help text.\n"
" -v, --version Show versioning information.\n"
" -r, --reverse Do a reverse lookup, i.e. classid to name.\n"
" --raw Print the raw classid, not pretty printed.\n"
"\n"
"EXAMPLE\n"
" $ nl-classid-lookup low_latency\n"
" $ nl-classid-lookup -r 1:12\n"
"\n"
);
exit(0);
}
int main(int argc, char *argv[])
{
uint32_t classid;
char *name;
int err, reverse = 0, raw = 0;
for (;;) {
int c, optidx = 0;
enum {
ARG_RAW = 257,
};
static struct option long_opts[] = {
{ "help", 0, 0, 'h' },
{ "version", 0, 0, 'v' },
{ "reverse", 0, 0, 'r' },
{ "raw", 0, 0, ARG_RAW },
{ 0, 0, 0, 0 }
};
c = getopt_long(argc, argv, "hvr", long_opts, &optidx);
if (c == -1)
break;
switch (c) {
case 'h': print_usage(); break;
case 'v': nl_cli_print_version(); break;
case 'r': reverse = 1; break;
case ARG_RAW: raw = 1; break;
}
}
if (optind >= argc)
print_usage();
name = argv[optind++];
/*
* We use rtnl_tc_str2handle() even while doing a reverse lookup. This
* allows for name -> name lookups. This is intentional, it does not
* do any harm and avoids duplicating a lot of code.
*/
if ((err = rtnl_tc_str2handle(name, &classid)) < 0)
nl_cli_fatal(err, "Unable to lookup classid \"%s\": %s",
name, nl_geterror(err));
if (reverse) {
char buf[64];
printf("%s\n", rtnl_tc_handle2str(classid, buf, sizeof(buf)));
} else if (raw)
printf("%#x\n", classid);
else
printf("%x:%x\n", TC_H_MAJ(classid) >> 16, TC_H_MIN(classid));
return 0;
}
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