qdisc: netem add support to duplicate packets.
using this option the chosen percent of packets is duplicated before queuing them
This commit is contained in:
parent
673d873a42
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b9c5aa3c65
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@ -2351,6 +2351,14 @@
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</listitem>
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</listitem>
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</varlistentry>
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</varlistentry>
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<varlistentry>
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<term><varname>NetworkEmulatorDuplicateRate=</varname></term>
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<listitem>
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<para>Specifies that the chosen percent of packets is duplicated before queuing them.
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Takes a percentage value, suffixed with "%". Defaults to unset.</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</variablelist>
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</refsect1>
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</refsect1>
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@ -247,7 +247,8 @@ CAN.TripleSampling, config_parse_tristate,
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TrafficControlQueueingDiscipline.Parent, config_parse_tc_qdiscs_parent, 0, 0
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TrafficControlQueueingDiscipline.Parent, config_parse_tc_qdiscs_parent, 0, 0
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TrafficControlQueueingDiscipline.NetworkEmulatorDelaySec, config_parse_tc_network_emulator_delay, 0, 0
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TrafficControlQueueingDiscipline.NetworkEmulatorDelaySec, config_parse_tc_network_emulator_delay, 0, 0
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TrafficControlQueueingDiscipline.NetworkEmulatorDelayJitterSec, config_parse_tc_network_emulator_delay, 0, 0
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TrafficControlQueueingDiscipline.NetworkEmulatorDelayJitterSec, config_parse_tc_network_emulator_delay, 0, 0
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TrafficControlQueueingDiscipline.NetworkEmulatorLossRate, config_parse_tc_network_emulator_loss_rate, 0, 0
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TrafficControlQueueingDiscipline.NetworkEmulatorLossRate, config_parse_tc_network_emulator_rate, 0, 0
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TrafficControlQueueingDiscipline.NetworkEmulatorDuplicateRate, config_parse_tc_network_emulator_rate, 0, 0
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TrafficControlQueueingDiscipline.NetworkEmulatorPacketLimit, config_parse_tc_network_emulator_packet_limit, 0, 0
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TrafficControlQueueingDiscipline.NetworkEmulatorPacketLimit, config_parse_tc_network_emulator_packet_limit, 0, 0
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/* backwards compatibility: do not add new entries to this section */
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/* backwards compatibility: do not add new entries to this section */
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Network.IPv4LL, config_parse_ipv4ll, 0, offsetof(Network, link_local)
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Network.IPv4LL, config_parse_ipv4ll, 0, offsetof(Network, link_local)
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@ -50,6 +50,9 @@ int network_emulator_fill_message(Link *link, QDiscs *qdisc, sd_netlink_message
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if (qdisc->ne.loss > 0)
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if (qdisc->ne.loss > 0)
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opt.loss = qdisc->ne.loss;
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opt.loss = qdisc->ne.loss;
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if (qdisc->ne.duplicate > 0)
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opt.duplicate = qdisc->ne.duplicate;
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if (qdisc->ne.delay != USEC_INFINITY) {
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if (qdisc->ne.delay != USEC_INFINITY) {
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r = tc_time_to_tick(qdisc->ne.delay, &opt.latency);
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r = tc_time_to_tick(qdisc->ne.delay, &opt.latency);
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if (r < 0)
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if (r < 0)
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@ -124,7 +127,7 @@ int config_parse_tc_network_emulator_delay(
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return 0;
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return 0;
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}
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}
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int config_parse_tc_network_emulator_loss_rate(
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int config_parse_tc_network_emulator_rate(
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const char *unit,
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const char *unit,
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const char *filename,
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const char *filename,
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unsigned line,
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unsigned line,
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@ -138,6 +141,7 @@ int config_parse_tc_network_emulator_loss_rate(
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_cleanup_(qdisc_free_or_set_invalidp) QDiscs *qdisc = NULL;
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_cleanup_(qdisc_free_or_set_invalidp) QDiscs *qdisc = NULL;
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Network *network = data;
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Network *network = data;
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uint32_t rate;
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int r;
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int r;
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assert(filename);
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assert(filename);
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@ -156,14 +160,19 @@ int config_parse_tc_network_emulator_loss_rate(
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return 0;
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return 0;
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}
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}
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r = parse_tc_percent(rvalue, &qdisc->ne.loss);
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r = parse_tc_percent(rvalue, &rate);
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if (r < 0) {
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if (r < 0) {
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log_syntax(unit, LOG_ERR, filename, line, r,
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log_syntax(unit, LOG_ERR, filename, line, r,
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"Failed to parse 'NetworkEmularorLossRate=', ignoring assignment: %s",
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"Failed to parse '%s=', ignoring assignment: %s",
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rvalue);
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lvalue, rvalue);
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return 0;
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return 0;
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}
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}
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if (streq(lvalue, "NetworkEmulatorLossRate"))
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qdisc->ne.loss = rate;
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else if (streq(lvalue, "NetworkEmulatorDuplicateRate"))
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qdisc->ne.duplicate = rate;
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qdisc = NULL;
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qdisc = NULL;
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return 0;
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return 0;
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}
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}
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@ -16,11 +16,12 @@ typedef struct NetworkEmulator {
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uint32_t limit;
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uint32_t limit;
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uint32_t loss;
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uint32_t loss;
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uint32_t duplicate;
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} NetworkEmulator;
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} NetworkEmulator;
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int network_emulator_new(NetworkEmulator **ret);
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int network_emulator_new(NetworkEmulator **ret);
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int network_emulator_fill_message(Link *link, QDiscs *qdisc, sd_netlink_message *req);
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int network_emulator_fill_message(Link *link, QDiscs *qdisc, sd_netlink_message *req);
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CONFIG_PARSER_PROTOTYPE(config_parse_tc_network_emulator_delay);
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CONFIG_PARSER_PROTOTYPE(config_parse_tc_network_emulator_delay);
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CONFIG_PARSER_PROTOTYPE(config_parse_tc_network_emulator_loss_rate);
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CONFIG_PARSER_PROTOTYPE(config_parse_tc_network_emulator_rate);
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CONFIG_PARSER_PROTOTYPE(config_parse_tc_network_emulator_packet_limit);
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CONFIG_PARSER_PROTOTYPE(config_parse_tc_network_emulator_packet_limit);
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@ -268,4 +268,5 @@ Parent=
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NetworkEmulatorDelaySec=
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NetworkEmulatorDelaySec=
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NetworkEmulatorDelayJitterSec=
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NetworkEmulatorDelayJitterSec=
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NetworkEmulatorLossRate=
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NetworkEmulatorLossRate=
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NetworkEmulatorDuplicateRate=
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NetworkEmulatorPacketLimit=
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NetworkEmulatorPacketLimit=
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