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/* Copyright (c) 2013-2019, The Tor Project, Inc. */
/* See LICENSE for licensing information */
#define TOR_CHANNEL_INTERNAL_
#define CIRCUITMUX_PRIVATE
#define CIRCUITMUX_EWMA_PRIVATE
#define RELAY_PRIVATE
#include "core/or/or.h"
#include "core/or/channel.h"
#include "core/or/circuitmux.h"
#include "core/or/circuitmux_ewma.h"
#include "core/or/destroy_cell_queue_st.h"
#include "core/or/relay.h"
#include "core/or/scheduler.h"
#include "test/fakechans.h"
#include "test/test.h"
#include <math.h>
static int
mock_has_queued_writes_true(channel_t *c)
{
(void) c;
return 1;
}
/** Test destroy cell queue with no interference from other queues. */
static void
test_cmux_destroy_cell_queue(void *arg)
{
circuitmux_t *cmux = NULL;
channel_t *ch = NULL;
circuit_t *circ = NULL;
destroy_cell_queue_t *cq = NULL;
packed_cell_t *pc = NULL;
destroy_cell_t *dc = NULL;
MOCK(scheduler_release_channel, scheduler_release_channel_mock);
(void) arg;
ch = new_fake_channel();
ch->has_queued_writes = mock_has_queued_writes_true;
ch->wide_circ_ids = 1;
cmux = ch->cmux;
circ = circuitmux_get_first_active_circuit(cmux, &cq);
tt_ptr_op(circ, OP_EQ, NULL);
tt_ptr_op(cq, OP_EQ, NULL);
circuitmux_append_destroy_cell(ch, cmux, 100, 10);
circuitmux_append_destroy_cell(ch, cmux, 190, 6);
circuitmux_append_destroy_cell(ch, cmux, 30, 1);
tt_int_op(circuitmux_num_cells(cmux), OP_EQ, 3);
circ = circuitmux_get_first_active_circuit(cmux, &cq);
tt_ptr_op(circ, OP_EQ, NULL);
tt_assert(cq);
tt_int_op(cq->n, OP_EQ, 3);
dc = destroy_cell_queue_pop(cq);
tt_assert(dc);
tt_uint_op(dc->circid, OP_EQ, 100);
tt_int_op(circuitmux_num_cells(cmux), OP_EQ, 2);
done:
free_fake_channel(ch);
packed_cell_free(pc);
tor_free(dc);
UNMOCK(scheduler_release_channel);
}
static void
test_cmux_compute_ticks(void *arg)
{
const int64_t NS_PER_S = 1000 * 1000 * 1000;
const int64_t START_NS = UINT64_C(1217709000)*NS_PER_S;
int64_t now;
double rem;
unsigned tick;
(void)arg;
circuitmux_ewma_free_all();
monotime_enable_test_mocking();
monotime_coarse_set_mock_time_nsec(START_NS);
cell_ewma_initialize_ticks();
const unsigned tick_zero = cell_ewma_get_current_tick_and_fraction(&rem);
tt_double_op(rem, OP_GT, -1e-9);
tt_double_op(rem, OP_LT, 1e-9);
/* 1.5 second later and we should still be in the same tick. */
now = START_NS + NS_PER_S + NS_PER_S/2;
monotime_coarse_set_mock_time_nsec(now);
tick = cell_ewma_get_current_tick_and_fraction(&rem);
tt_uint_op(tick, OP_EQ, tick_zero);
#ifdef USING_32BIT_MSEC_HACK
const double tolerance = .0005;
#else
const double tolerance = .00000001;
#endif
tt_double_op(fabs(rem - .15), OP_LT, tolerance);
/* 25 second later and we should be in another tick. */
now = START_NS + NS_PER_S * 25;
monotime_coarse_set_mock_time_nsec(now);
tick = cell_ewma_get_current_tick_and_fraction(&rem);
tt_uint_op(tick, OP_EQ, tick_zero + 2);
tt_double_op(fabs(rem - .5), OP_LT, tolerance);
done:
;
}
static void
test_cmux_allocate(void *arg)
{
circuitmux_t *cmux = NULL;
(void) arg;
cmux = circuitmux_alloc();
tt_assert(cmux);
tt_assert(cmux->chanid_circid_map);
tt_int_op(HT_SIZE(cmux->chanid_circid_map), OP_EQ, 0);
tt_uint_op(cmux->n_circuits, OP_EQ, 0);
tt_uint_op(cmux->n_active_circuits, OP_EQ, 0);
tt_uint_op(cmux->n_cells, OP_EQ, 0);
tt_uint_op(cmux->last_cell_was_destroy, OP_EQ, 0);
tt_int_op(cmux->destroy_ctr, OP_EQ, 0);
tt_ptr_op(cmux->policy, OP_EQ, NULL);
tt_ptr_op(cmux->policy_data, OP_EQ, NULL);
tt_assert(TOR_SIMPLEQ_EMPTY(&cmux->destroy_cell_queue.head));
done:
circuitmux_free(cmux);
}
static void *
cmux_setup_test(const struct testcase_t *tc)
{
static int whatever;
(void) tc;
cell_ewma_initialize_ticks();
return &whatever;
}
static int
cmux_cleanup_test(const struct testcase_t *tc, void *ptr)
{
(void) tc;
(void) ptr;
circuitmux_ewma_free_all();
return 1;
}
static struct testcase_setup_t cmux_test_setup = {
.setup_fn = cmux_setup_test,
.cleanup_fn = cmux_cleanup_test,
};
#define TEST_CMUX(name) \
{ #name, test_cmux_##name, TT_FORK, &cmux_test_setup, NULL }
struct testcase_t circuitmux_tests[] = {
/* Test circuitmux_t object */
TEST_CMUX(allocate),
/* Misc. */
TEST_CMUX(compute_ticks),
TEST_CMUX(destroy_cell_queue),
END_OF_TESTCASES
};
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