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/**
* Copyright (c) NVIDIA CORPORATION & AFFILIATES, 2001-2015. ALL RIGHTS RESERVED.
*
* See file LICENSE for terms.
*/
#include "ud_base.h"
#include <uct/uct_test.h>
extern "C" {
#include <ucs/time/time.h>
#include <ucs/datastruct/queue.h>
#include <ucs/datastruct/ptr_array.h>
#include <uct/ib/ud/base/ud_ep.h>
#include <uct/ib/ud/base/ud_iface.h>
}
class test_ud_timer : public ud_base_test {
public:
/* ack while doing retransmit */
static int packet_count, rx_limit;
static ucs_status_t rx_npackets(uct_ud_ep_t *ep, uct_ud_neth_t *neth)
{
if (packet_count++ < rx_limit) {
return UCS_OK;
}
else {
return UCS_ERR_INVALID_PARAM;
}
}
/* test slow timer and restransmit */
static int tick_count;
static ucs_status_t tick_counter(uct_ud_ep_t *ep, uct_ud_neth_t *neth)
{
uct_ud_iface_t *iface = ucs_derived_of(ep->super.super.iface,
uct_ud_iface_t);
/* hack to disable retransmit */
ep->tx.send_time = ucs_twheel_get_time(&iface->tx.timer);
tick_count++;
return UCS_OK;
}
static ucs_status_t drop_packet(uct_ud_ep_t *ep, uct_ud_neth_t *neth)
{
return UCS_ERR_INVALID_PARAM;
}
void wait_for_rx_sn(unsigned sn)
{
ucs_time_t deadline = ucs_get_time() +
ucs_time_from_sec(10) * ucs::test_time_multiplier();
while ((ucs_get_time() < deadline) && (ucs_frag_list_sn(&ep(m_e2)->rx.ooo_pkts) < sn)) {
usleep(1000);
}
}
void wait_for_ep_destroyed(uct_ud_iface_t *iface, uint32_t ep_idx)
{
ucs_time_t deadline = ucs_get_time() +
ucs_time_from_sec(60) * ucs::test_time_multiplier();
void *ud_ep_tmp GTEST_ATTRIBUTE_UNUSED_;
while ((ucs_get_time() < deadline) &&
ucs_ptr_array_lookup(&iface->eps, ep_idx, ud_ep_tmp)) {
usleep(1000);
}
}
};
int test_ud_timer::rx_limit = 10;
int test_ud_timer::packet_count = 0;
int test_ud_timer::tick_count = 0;
/* single packet received without progress */
UCS_TEST_SKIP_COND_P(test_ud_timer, tx1,
!check_caps(UCT_IFACE_FLAG_PUT_SHORT)) {
connect();
EXPECT_UCS_OK(tx(m_e1));
wait_for_rx_sn(1);
EXPECT_EQ(2, ep(m_e1)->tx.psn);
EXPECT_EQ(1, ucs_frag_list_sn(&ep(m_e2)->rx.ooo_pkts));
}
/* multiple packets received without progress */
UCS_TEST_SKIP_COND_P(test_ud_timer, txn,
!check_caps(UCT_IFACE_FLAG_PUT_SHORT)) {
unsigned i, N = 42;
connect();
set_tx_win(m_e1, 1024);
for (i = 0; i < N; i++) {
EXPECT_UCS_OK(tx(m_e1));
}
wait_for_rx_sn(N);
EXPECT_EQ(N+1, ep(m_e1)->tx.psn);
EXPECT_EQ(N, ucs_frag_list_sn(&ep(m_e2)->rx.ooo_pkts));
}
UCS_TEST_P(test_ud_timer, ep_destroy, "UD_LINGER_TIMEOUT=1s") {
void *ud_ep_tmp GTEST_ATTRIBUTE_UNUSED_;
connect();
uct_ud_ep_t *ud_ep = ep(m_e1);
uct_ud_iface_t *iface = ucs_derived_of(ud_ep->super.super.iface,
uct_ud_iface_t);
uint32_t ep_idx = ud_ep->ep_id;
EXPECT_TRUE(ucs_ptr_array_lookup(&iface->eps, ep_idx, ud_ep_tmp));
m_e1->destroy_eps();
wait_for_ep_destroyed(iface, ep_idx);
EXPECT_FALSE(ucs_ptr_array_lookup(&iface->eps, ep_idx, ud_ep_tmp));
}
UCS_TEST_P(test_ud_timer, backoff_config) {
/* check minimum allowed value */
ASSERT_UCS_OK(uct_config_modify(m_iface_config,
"UD_TIMER_BACKOFF",
ucs::to_string(UCT_UD_MIN_TIMER_TIMER_BACKOFF).c_str()));
entity *e = uct_test::create_entity(0);
m_entities.push_back(e);
{
/* iface creation should fail with back off value less than
* UCT_UD_MIN_TIMER_TIMER_BACKOFF */
ASSERT_UCS_OK(uct_config_modify(m_iface_config,
"UD_TIMER_BACKOFF",
ucs::to_string(UCT_UD_MIN_TIMER_TIMER_BACKOFF - 0.1).c_str()));
scoped_log_handler wrap_err(wrap_errors_logger);
uct_iface_h iface;
ucs_status_t status = uct_iface_open(e->md(), e->worker(),
&e->iface_params(),
m_iface_config, &iface);
EXPECT_EQ(UCS_ERR_INVALID_PARAM, status);
EXPECT_EQ(NULL, iface);
}
}
#if UCT_UD_EP_DEBUG_HOOKS
/* no traffic - no ticks */
UCS_TEST_P(test_ud_timer, tick1) {
connect();
tick_count = 0;
ep(m_e1)->timer_hook = tick_counter;
twait(500);
EXPECT_EQ(0, tick_count);
}
/* ticks while tx window is not empty */
UCS_TEST_SKIP_COND_P(test_ud_timer, tick2,
!check_caps(UCT_IFACE_FLAG_PUT_SHORT)) {
connect();
tick_count = 0;
ep(m_e1)->timer_hook = tick_counter;
EXPECT_UCS_OK(tx(m_e1));
twait(500);
EXPECT_LT(0, tick_count);
}
/* retransmit one packet */
UCS_TEST_SKIP_COND_P(test_ud_timer, retransmit1,
!check_caps(UCT_IFACE_FLAG_PUT_SHORT)) {
connect();
ep(m_e2)->rx.rx_hook = drop_packet;
EXPECT_UCS_OK(tx(m_e1));
short_progress_loop();
EXPECT_EQ(0, ucs_frag_list_sn(&ep(m_e2)->rx.ooo_pkts));
ep(m_e2)->rx.rx_hook = uct_ud_ep_null_hook;
EXPECT_EQ(2, ep(m_e1)->tx.psn);
wait_for_rx_sn(1);
EXPECT_EQ(2, ep(m_e1)->tx.psn);
EXPECT_EQ(1, ucs_frag_list_sn(&ep(m_e2)->rx.ooo_pkts));
}
/* retransmit many packets */
UCS_TEST_SKIP_COND_P(test_ud_timer, retransmitn,
!check_caps(UCT_IFACE_FLAG_PUT_SHORT)) {
unsigned i, N = 42;
connect();
set_tx_win(m_e1, 1024);
ep(m_e2)->rx.rx_hook = drop_packet;
for (i = 0; i < N; i++) {
EXPECT_UCS_OK(tx(m_e1));
}
short_progress_loop();
EXPECT_EQ(0, ucs_frag_list_sn(&ep(m_e2)->rx.ooo_pkts));
ep(m_e2)->rx.rx_hook = uct_ud_ep_null_hook;
EXPECT_EQ(N+1, ep(m_e1)->tx.psn);
wait_for_rx_sn(N);
EXPECT_EQ(N+1, ep(m_e1)->tx.psn);
EXPECT_EQ(N, ucs_frag_list_sn(&ep(m_e2)->rx.ooo_pkts));
}
UCS_TEST_SKIP_COND_P(test_ud_timer, partial_drop,
!check_caps(UCT_IFACE_FLAG_PUT_SHORT)) {
unsigned i, N = 24;
int orig_avail;
connect();
set_tx_win(m_e1, 1024);
packet_count = 0;
rx_limit = 10;
ep(m_e2)->rx.rx_hook = rx_npackets;
for (i = 0; i < N; i++) {
EXPECT_UCS_OK(tx(m_e1));
}
short_progress_loop();
EXPECT_EQ(rx_limit, ucs_frag_list_sn(&ep(m_e2)->rx.ooo_pkts));
ep(m_e2)->rx.rx_hook = uct_ud_ep_null_hook;
EXPECT_EQ(N+1, ep(m_e1)->tx.psn);
orig_avail = iface(m_e1)->tx.available;
/* allow only 6 outgoing packets. It will allow to get ack
* from receiver
*/
iface(m_e1)->tx.available = 6;
twait(500);
iface(m_e1)->tx.available = orig_avail-6;
short_progress_loop();
EXPECT_EQ(N+1, ep(m_e1)->tx.psn);
wait_for_rx_sn(N);
EXPECT_EQ(N, ucs_frag_list_sn(&ep(m_e2)->rx.ooo_pkts));
}
#endif
UCT_INSTANTIATE_UD_TEST_CASE(test_ud_timer)
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