13 #include <netlink/cli/utils.h> 14 #include <netlink/cli/tc.h> 15 #include <netlink/route/qdisc/plug.h> 17 static void print_usage(
void)
20 "Usage: nl-qdisc-add [...] plug [OPTIONS]...\n" 23 " --help Show this help text.\n" 24 " --limit Maximum queue length in bytes.\n" 25 " --buffer create a new buffer(plug) and queue incoming traffic into it.\n" 26 " --release-one release traffic from previous buffer.\n" 27 " --release-indefinite stop buffering and release all (buffered and new) packets.\n" 30 " # Attach plug qdisc with 32KB queue size to ifb0\n" 31 " nl-qdisc-add --dev=ifb0 --parent=root plug --limit=32768\n" 32 " # Plug network traffic arriving at ifb0\n" 33 " nl-qdisc-add --dev=ifb0 --parent=root --update plug --buffer\n" 34 " # Unplug traffic arriving at ifb0 indefinitely\n" 35 " nl-qdisc-add --dev=ifb0 --parent=root --update plug --release-indefinite\n\n" 36 " # If operating in output buffering mode:\n" 37 " # at time t=t0, create a new output buffer b0 to hold network output\n" 38 " nl-qdisc-add --dev=ifb0 --parent=root --update plug --buffer\n\n" 39 " # at time t=t1, take a checkpoint c0, create a new output buffer b1\n" 40 " nl-qdisc-add --dev=ifb0 --parent=root --update plug --buffer\n" 41 " # at time t=t1+r, after c0 is committed, release b0\n" 42 " nl-qdisc-add --dev=ifb0 --parent=root --update plug --release-one\n\n" 43 " # at time t=t2, take a checkpoint c1, create a new output buffer b2\n" 44 " nl-qdisc-add --dev=ifb0 --parent=root --update plug --buffer\n" 45 " # at time t=t2+r, after c1 is committed, release b1\n" 46 " nl-qdisc-add --dev=ifb0 --parent=root --update plug --release-one\n");
49 static void plug_parse_argv(
struct rtnl_tc *tc,
int argc,
char **argv)
51 struct rtnl_qdisc *qdisc = (
struct rtnl_qdisc *) tc;
58 ARG_RELEASE_ONE = 259,
59 ARG_RELEASE_INDEFINITE = 260,
61 static struct option long_opts[] = {
62 {
"help", 0, 0,
'h' },
63 {
"limit", 1, 0, ARG_LIMIT },
64 {
"buffer", 0, 0, ARG_BUFFER },
65 {
"release-one", 0, 0, ARG_RELEASE_ONE },
66 {
"release-indefinite", 0, 0, ARG_RELEASE_INDEFINITE },
70 c = getopt_long(argc, argv,
"h", long_opts, &optidx);
91 case ARG_RELEASE_INDEFINITE:
101 .tm_type = RTNL_TC_TYPE_QDISC,
102 .tm_parse_argv = plug_parse_argv,
105 static void __init plug_init(
void)
107 nl_cli_tc_register(&plug_module);
110 static void __exit plug_exit(
void)
112 nl_cli_tc_unregister(&plug_module);
int rtnl_qdisc_plug_set_limit(struct rtnl_qdisc *qdisc, int limit)
Set limit of PLUG qdisc.
uint32_t nl_cli_parse_u32(const char *arg)
Parse a text based 32 bit unsigned integer argument.
int rtnl_qdisc_plug_release_indefinite(struct rtnl_qdisc *qdisc)
Indefinitely unplug the qdisc, releasing all packets.
int rtnl_qdisc_plug_buffer(struct rtnl_qdisc *qdisc)
Insert a plug into the qdisc and buffer any incoming network traffic.
int rtnl_qdisc_plug_release_one(struct rtnl_qdisc *qdisc)
Unplug the qdisc, releasing packets from queue head to the last complete buffer, while new traffic co...