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Add CWND test vectors
This commit is contained in:
Mike Perry
parent
06aa454c08
commit
331b874e69
@ -2,14 +2,39 @@
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#include "test/test.h"
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#include "test/log_test_helpers.h"
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#include "lib/testsupport/testsupport.h"
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#include "test/fakecircs.h"
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#include "test/rng_test_helpers.h"
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#include "lib/time/compat_time.h"
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#include "core/or/circuitlist.h"
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#include "core/or/circuitmux.h"
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#include "core/or/channel.h"
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#define TOR_CONGESTION_CONTROL_COMMON_PRIVATE
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#define TOR_CONGESTION_CONTROL_PRIVATE
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#include "core/or/congestion_control_st.h"
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#include "core/or/congestion_control_common.h"
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#include "core/or/congestion_control_vegas.h"
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void test_congestion_control_rtt(void *arg);
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void test_congestion_control_clock(void *arg);
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void test_congestion_control_vegas_cwnd(void *arg);
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static void
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circuitmux_attach_circuit_mock(circuitmux_t *cmux, circuit_t *circ,
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cell_direction_t direction);
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static void
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circuitmux_attach_circuit_mock(circuitmux_t *cmux, circuit_t *circ,
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cell_direction_t direction)
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{
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(void)cmux;
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(void)circ;
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(void)direction;
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return;
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}
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/* =============== Clock Heuristic Test Vectors =============== */
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@ -160,11 +185,206 @@ test_congestion_control_rtt(void *arg)
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return;
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}
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/* =========== Vegas CWND Test Vectors ============== */
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typedef struct cwnd_vec {
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uint64_t sent_usec_in;
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uint64_t got_sendme_usec_in;
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bool or_conn_blocked_in;
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uint64_t inflight_in;
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uint64_t ewma_rtt_usec_out;
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uint64_t min_rtt_usec_out;
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uint64_t cwnd_out;
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bool in_slow_start_out;
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bool cwnd_full_out;
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bool blocked_chan_out;
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} cwnd_vec_t;
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static void
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run_vegas_cwnd_test_vec(congestion_control_t *cc,
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circuit_t *circ,
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cwnd_vec_t *vec, size_t vec_len)
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{
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for (size_t i = 0; i < vec_len; i++) {
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enqueue_timestamp(cc->sendme_pending_timestamps,
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vec[i].sent_usec_in);
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}
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for (size_t i = 0; i < vec_len; i++) {
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log_notice(LD_CIRC, "Step %d", (int)i);
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monotime_set_mock_time_nsec(vec[i].got_sendme_usec_in*1000);
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circ->circuit_blocked_on_p_chan = vec[i].or_conn_blocked_in;
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cc->inflight = vec[i].inflight_in;
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congestion_control_vegas_process_sendme(cc, circ, NULL);
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/* If the or conn was blocked, ensure we updated our
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* CC state */
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if (vec[i].or_conn_blocked_in) {
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tt_int_op(cc->next_cc_event, OP_EQ, CWND_UPDATE_RATE(cc));
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}
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tt_int_op(cc->ewma_rtt_usec, OP_EQ, vec[i].ewma_rtt_usec_out);
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tt_int_op(cc->min_rtt_usec, OP_EQ, vec[i].min_rtt_usec_out);
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tt_int_op(cc->cwnd, OP_EQ, vec[i].cwnd_out);
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tt_int_op(cc->in_slow_start, OP_EQ, vec[i].in_slow_start_out);
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tt_int_op(cc->cwnd_full, OP_EQ, vec[i].cwnd_full_out);
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tt_int_op(cc->blocked_chan, OP_EQ, vec[i].blocked_chan_out);
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}
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done:
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is_monotime_clock_broken = false;
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}
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/**
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* This test validates congestion window updates for the
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* TOR_VEGAS congestion control algorithm, from Section 3.3
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* of Prop#324.
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*
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* It tests updates as a function of the timestamp of the
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* cell that would trigger a sendme and the sendme arrival
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* timestamp, and as a function of orconn blocking.
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*
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* It ensures that at least one test vector caused a cwnd update
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* due to a blocked OR connection. The orconn blocking logic is
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* simulated -- we do NOT actually exercise the orconn code here.
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*
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* We also do NOT exercise the sendme pacing code here. See
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* test_sendme_is_next() for that, in test_sendme.c.
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*
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* We also do NOT exercise the negotiation code here. See
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* test_ntor3_handshake() for that, in test_ntor_v3.c.
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*/
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void
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test_congestion_control_vegas_cwnd(void *arg)
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{
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(void)arg;
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circuit_params_t params;
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/* Replay of RTT edge case checks, plus some extra to exit
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* slow start via RTT, and exercise full/not full */
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cwnd_vec_t vect1[] = {
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{100000, 200000, 0, 124, 100000, 100000, 155, 1, 0, 0},
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{200000, 300000, 0, 155, 100000, 100000, 186, 1, 1, 0},
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{350000, 500000, 0, 186, 133333, 100000, 217, 1, 1, 0},
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{500000, 550000, 0, 217, 77777, 77777, 248, 1, 1, 0},
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{600000, 700000, 0, 248, 92592, 77777, 279, 1, 1, 0},
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{700000, 750000, 0, 279, 64197, 64197, 310, 1, 0, 0}, // Fullness expiry
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{750000, 875000, 0, 310, 104732, 64197, 341, 1, 1, 0},
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{875000, 900000, 0, 341, 51577, 51577, 372, 1, 1, 0},
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{900000, 950000, 0, 279, 50525, 50525, 403, 1, 1, 0},
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{950000, 1000000, 0, 279, 50175, 50175, 434, 1, 1, 0},
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{1000000, 1050000, 0, 279, 50058, 50058, 465, 1, 1, 0},
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{1050000, 1100000, 0, 279, 50019, 50019, 496, 1, 1, 0},
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{1100000, 1150000, 0, 279, 50006, 50006, 527, 1, 1, 0},
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{1150000, 1200000, 0, 279, 50002, 50002, 558, 1, 1, 0},
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{1200000, 1250000, 0, 550, 50000, 50000, 589, 1, 1, 0},
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{1250000, 1300000, 0, 550, 50000, 50000, 620, 1, 0, 0}, // Fullness expiry
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{1300000, 1350000, 0, 550, 50000, 50000, 635, 1, 1, 0},
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{1350000, 1400000, 0, 550, 50000, 50000, 650, 1, 1, 0},
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{1400000, 1450000, 0, 150, 50000, 50000, 650, 1, 0, 0}, // cwnd not full
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{1450000, 1500000, 0, 150, 50000, 50000, 650, 1, 0, 0}, // cwnd not full
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{1500000, 1550000, 0, 550, 50000, 50000, 664, 1, 1, 0}, // cwnd full
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{1500000, 1600000, 0, 550, 83333, 50000, 584, 0, 1, 0}, // gamma exit
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{1600000, 1650000, 0, 550, 61111, 50000, 585, 0, 1, 0}, // alpha
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{1650000, 1700000, 0, 550, 53703, 50000, 586, 0, 1, 0},
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{1700000, 1750000, 0, 100, 51234, 50000, 586, 0, 0, 0}, // alpha, not full
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{1750000, 1900000, 0, 100, 117078, 50000, 559, 0, 0, 0}, // delta, not full
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{1900000, 2000000, 0, 100, 105692, 50000, 558, 0, 0, 0}, // beta, not full
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{2000000, 2075000, 0, 500, 85230, 50000, 558, 0, 1, 0}, // no change
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{2075000, 2125000, 1, 500, 61743, 50000, 557, 0, 1, 1}, // beta, blocked
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{2125000, 2150000, 0, 500, 37247, 37247, 558, 0, 1, 0}, // alpha
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{2150000, 2350000, 0, 500, 145749, 37247, 451, 0, 1, 0} // delta
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};
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/* Test exiting slow start via blocked orconn */
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cwnd_vec_t vect2[] = {
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{100000, 200000, 0, 124, 100000, 100000, 155, 1, 0, 0},
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{200000, 300000, 0, 155, 100000, 100000, 186, 1, 1, 0},
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{350000, 500000, 0, 186, 133333, 100000, 217, 1, 1, 0},
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{500000, 550000, 1, 217, 77777, 77777, 403, 0, 1, 1}, // ss exit, blocked
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{600000, 700000, 0, 248, 92592, 77777, 404, 0, 1, 0}, // alpha
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{700000, 750000, 1, 404, 64197, 64197, 403, 0, 0, 1}, // blocked beta
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{750000, 875000, 0, 403, 104732, 64197, 404, 0, 1, 0}
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};
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/* Real upload 1 */
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cwnd_vec_t vect3[] = {
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{ 18258527, 19002938, 0, 83, 744411, 744411, 155, 1, 0, 0 },
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{ 18258580, 19254257, 0, 52, 911921, 744411, 186, 1, 1, 0 },
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{ 20003224, 20645298, 0, 164, 732023, 732023, 217, 1, 1, 0 },
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{ 20003367, 21021444, 0, 133, 922725, 732023, 248, 1, 1, 0 },
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{ 20003845, 21265508, 0, 102, 1148683, 732023, 279, 1, 1, 0 },
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{ 20003975, 21429157, 0, 71, 1333015, 732023, 310, 1, 0, 0 },
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{ 20004309, 21707677, 0, 40, 1579917, 732023, 310, 1, 0, 0 }
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};
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/* Real upload 2 */
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cwnd_vec_t vect4[] = {
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{ 358297091, 358854163, 0, 83, 557072, 557072, 155, 1, 0, 0 },
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{ 358297649, 359123845, 0, 52, 736488, 557072, 186, 1, 1, 0 },
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{ 359492879, 359995330, 0, 186, 580463, 557072, 217, 1, 1, 0 },
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{ 359493043, 360489243, 0, 217, 857621, 557072, 248, 1, 1, 0 },
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{ 359493232, 360489673, 0, 248, 950167, 557072, 279, 1, 1, 0 },
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{ 359493795, 360489971, 0, 279, 980839, 557072, 310, 1, 0, 0 },
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{ 359493918, 360490248, 0, 310, 991166, 557072, 341, 1, 1, 0 },
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{ 359494029, 360716465, 0, 341, 1145346, 557072, 372, 1, 1, 0 },
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{ 359996888, 360948867, 0, 372, 1016434, 557072, 403, 1, 1, 0 },
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{ 359996979, 360949330, 0, 403, 973712, 557072, 434, 1, 1, 0 },
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{ 360489528, 361113615, 0, 434, 740628, 557072, 465, 1, 1, 0 },
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{ 360489656, 361281604, 0, 465, 774841, 557072, 496, 1, 1, 0 },
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{ 360489837, 361500461, 0, 496, 932029, 557072, 482, 0, 1, 0 },
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{ 360489963, 361500631, 0, 482, 984455, 557072, 482, 0, 1, 0 },
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{ 360490117, 361842481, 0, 482, 1229727, 557072, 481, 0, 1, 0 }
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};
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congestion_control_t *cc = NULL;
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channel_t dummy_channel = {0};
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MOCK(circuitmux_attach_circuit, circuitmux_attach_circuit_mock);
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testing_enable_reproducible_rng();
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monotime_init();
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monotime_enable_test_mocking();
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monotime_set_mock_time_nsec(0);
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dummy_channel.cmux = circuitmux_alloc();
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circuit_t *circ = TO_CIRCUIT(new_fake_orcirc(&dummy_channel,
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&dummy_channel));
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circ->purpose = CIRCUIT_PURPOSE_OR;
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params.cc_enabled = 1;
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params.sendme_inc_cells = TLS_RECORD_MAX_CELLS;
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cc_alg = CC_ALG_VEGAS;
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cc = congestion_control_new(¶ms, CC_PATH_EXIT);
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run_vegas_cwnd_test_vec(cc, circ, vect1,
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sizeof(vect1)/sizeof(cwnd_vec_t));
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congestion_control_free(cc);
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cc = congestion_control_new(¶ms, CC_PATH_EXIT);
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run_vegas_cwnd_test_vec(cc, circ, vect2,
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sizeof(vect2)/sizeof(cwnd_vec_t));
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congestion_control_free(cc);
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cc = congestion_control_new(¶ms, CC_PATH_EXIT);
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run_vegas_cwnd_test_vec(cc, circ, vect3,
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sizeof(vect3)/sizeof(cwnd_vec_t));
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congestion_control_free(cc);
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cc = congestion_control_new(¶ms, CC_PATH_EXIT);
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run_vegas_cwnd_test_vec(cc, circ, vect4,
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sizeof(vect4)/sizeof(cwnd_vec_t));
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congestion_control_free(cc);
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//done:
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circuitmux_free(dummy_channel.cmux);
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return;
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}
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#define TEST_CONGESTION_CONTROL(name, flags) \
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{ #name, test_##name, (flags), NULL, NULL }
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struct testcase_t congestion_control_tests[] = {
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TEST_CONGESTION_CONTROL(congestion_control_clock, TT_FORK),
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TEST_CONGESTION_CONTROL(congestion_control_rtt, TT_FORK),
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TEST_CONGESTION_CONTROL(congestion_control_vegas_cwnd, TT_FORK),
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END_OF_TESTCASES
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};
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