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114 lines
3.3 KiB
114 lines
3.3 KiB
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/*
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* src/lib/cli/qdisc/plug.c plug module for CLI lib
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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) 2012 Shriram Rajagopalan <rshriram@cs.ubc.ca>
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*/
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#include <netlink/cli/utils.h>
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#include <netlink/cli/tc.h>
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#include <netlink/route/qdisc/plug.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-qdisc-add [...] plug [OPTIONS]...\n"
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"\n"
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"OPTIONS\n"
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" --help Show this help text.\n"
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" --limit Maximum queue length in bytes.\n"
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" --buffer create a new buffer(plug) and queue incoming traffic into it.\n"
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" --release-one release traffic from previous buffer.\n"
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" --release-indefinite stop buffering and release all (buffered and new) packets.\n"
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"\n"
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"EXAMPLE"
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" # Attach plug qdisc with 32KB queue size to ifb0\n"
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" nl-qdisc-add --dev=ifb0 --parent=root plug --limit=32768\n"
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" # Plug network traffic arriving at ifb0\n"
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" nl-qdisc-add --dev=ifb0 --parent=root --update plug --buffer\n"
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" # Unplug traffic arriving at ifb0 indefinitely\n"
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" nl-qdisc-add --dev=ifb0 --parent=root --update plug --release-indefinite\n\n"
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" # If operating in output buffering mode:\n"
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" # at time t=t0, create a new output buffer b0 to hold network output\n"
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" nl-qdisc-add --dev=ifb0 --parent=root --update plug --buffer\n\n"
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" # at time t=t1, take a checkpoint c0, create a new output buffer b1\n"
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" nl-qdisc-add --dev=ifb0 --parent=root --update plug --buffer\n"
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" # at time t=t1+r, after c0 is committed, release b0\n"
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" nl-qdisc-add --dev=ifb0 --parent=root --update plug --release-one\n\n"
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" # at time t=t2, take a checkpoint c1, create a new output buffer b2\n"
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" nl-qdisc-add --dev=ifb0 --parent=root --update plug --buffer\n"
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" # at time t=t2+r, after c1 is committed, release b1\n"
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" nl-qdisc-add --dev=ifb0 --parent=root --update plug --release-one\n");
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}
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static void plug_parse_argv(struct rtnl_tc *tc, int argc, char **argv)
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{
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struct rtnl_qdisc *qdisc = (struct rtnl_qdisc *) tc;
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for (;;) {
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int c, optidx = 0;
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enum {
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ARG_LIMIT = 257,
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ARG_BUFFER = 258,
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ARG_RELEASE_ONE = 259,
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ARG_RELEASE_INDEFINITE = 260,
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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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{ "limit", 1, 0, ARG_LIMIT },
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{ "buffer", 0, 0, ARG_BUFFER },
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{ "release-one", 0, 0, ARG_RELEASE_ONE },
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{ "release-indefinite", 0, 0, ARG_RELEASE_INDEFINITE },
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{ 0, 0, 0, 0 }
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};
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c = getopt_long(argc, argv, "h", 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':
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print_usage();
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return;
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case ARG_LIMIT:
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rtnl_qdisc_plug_set_limit(qdisc, nl_cli_parse_u32(optarg));
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break;
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case ARG_BUFFER:
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rtnl_qdisc_plug_buffer(qdisc);
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break;
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case ARG_RELEASE_ONE:
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rtnl_qdisc_plug_release_one(qdisc);
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break;
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case ARG_RELEASE_INDEFINITE:
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rtnl_qdisc_plug_release_indefinite(qdisc);
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break;
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}
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}
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}
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static struct nl_cli_tc_module plug_module =
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{
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.tm_name = "plug",
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.tm_type = RTNL_TC_TYPE_QDISC,
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.tm_parse_argv = plug_parse_argv,
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};
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static void __init plug_init(void)
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{
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nl_cli_tc_register(&plug_module);
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}
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static void __exit plug_exit(void)
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{
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nl_cli_tc_unregister(&plug_module);
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}
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