/*
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* src/nl-classid-lookup.c Lookup classid
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation version 2.1
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* of the License.
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*
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* Copyright (c) 2010 Thomas Graf <tgraf@suug.ch>
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*/
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#include <netlink/cli/utils.h>
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static void print_usage(void)
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{
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printf(
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"Usage: nl-classid-lookup [OPTIONS]... NAME\n"
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"\n"
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"OPTIONS\n"
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" -h, --help Show this help text.\n"
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" -v, --version Show versioning information.\n"
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" -r, --reverse Do a reverse lookup, i.e. classid to name.\n"
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" --raw Print the raw classid, not pretty printed.\n"
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"\n"
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"EXAMPLE\n"
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" $ nl-classid-lookup low_latency\n"
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" $ nl-classid-lookup -r 1:12\n"
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"\n"
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);
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exit(0);
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}
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int main(int argc, char *argv[])
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{
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uint32_t classid;
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char *name;
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int err, reverse = 0, raw = 0;
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for (;;) {
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int c, optidx = 0;
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enum {
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ARG_RAW = 257,
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};
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static struct option long_opts[] = {
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{ "help", 0, 0, 'h' },
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{ "version", 0, 0, 'v' },
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{ "reverse", 0, 0, 'r' },
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{ "raw", 0, 0, ARG_RAW },
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{ 0, 0, 0, 0 }
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};
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c = getopt_long(argc, argv, "hvr", long_opts, &optidx);
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if (c == -1)
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break;
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switch (c) {
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case 'h': print_usage(); break;
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case 'v': nl_cli_print_version(); break;
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case 'r': reverse = 1; break;
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case ARG_RAW: raw = 1; break;
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}
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}
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if (optind >= argc)
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print_usage();
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name = argv[optind++];
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/*
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* We use rtnl_tc_str2handle() even while doing a reverse lookup. This
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* allows for name -> name lookups. This is intentional, it does not
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* do any harm and avoids duplicating a lot of code.
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*/
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if ((err = rtnl_tc_str2handle(name, &classid)) < 0)
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nl_cli_fatal(err, "Unable to lookup classid \"%s\": %s",
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name, nl_geterror(err));
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if (reverse) {
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char buf[64];
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printf("%s\n", rtnl_tc_handle2str(classid, buf, sizeof(buf)));
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} else if (raw)
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printf("%#x\n", classid);
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else
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printf("%x:%x\n", TC_H_MAJ(classid) >> 16, TC_H_MIN(classid));
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return 0;
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}
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