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quic_fifd_test.c
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/*
* Copyright 2022-2023 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include "internal/packet.h"
#include "internal/quic_txpim.h"
#include "internal/quic_fifd.h"
#include "testutil.h"
static OSSL_TIME cur_time;
static OSSL_TIME fake_now(void *arg) {
return cur_time;
}
static void step_time(uint64_t ms) {
cur_time = ossl_time_add(cur_time, ossl_ms2time(ms));
}
static QUIC_SSTREAM *(*get_sstream_by_id_p)(uint64_t stream_id, uint32_t pn_space,
void *arg);
static QUIC_SSTREAM *get_sstream_by_id(uint64_t stream_id, uint32_t pn_space,
void *arg)
{
return get_sstream_by_id_p(stream_id, pn_space, arg);
}
static void (*regen_frame_p)(uint64_t frame_type, uint64_t stream_id,
QUIC_TXPIM_PKT *pkt, void *arg);
static void regen_frame(uint64_t frame_type, uint64_t stream_id,
QUIC_TXPIM_PKT *pkt, void *arg)
{
regen_frame_p(frame_type, stream_id, pkt, arg);
}
static void confirm_frame(uint64_t frame_type, uint64_t stream_id,
QUIC_TXPIM_PKT *pkt, void *arg)
{}
static void sstream_updated(uint64_t stream_id, void *arg)
{}
typedef struct info_st {
QUIC_FIFD fifd;
OSSL_ACKM *ackm;
QUIC_CFQ *cfq;
QUIC_TXPIM *txpim;
OSSL_STATM statm;
OSSL_CC_DATA *ccdata;
QUIC_SSTREAM *sstream[4];
} INFO;
static INFO *cur_info;
static int cb_fail;
static int cfq_freed;
/* ----------------------------------------------------------------------
* 1. Test that a submitted packet, on ack, acks all streams inside of it
* Test that a submitted packet, on ack, calls the get by ID function
* correctly
* Test that a submitted packet, on ack, acks all fins inside it
* Test that a submitted packet, on ack, releases the TXPIM packet
*/
static QUIC_SSTREAM *sstream_expect(uint64_t stream_id, uint32_t pn_space,
void *arg)
{
if (stream_id == 42 || stream_id == 43)
return cur_info->sstream[stream_id - 42];
cb_fail = 1;
return NULL;
}
static uint64_t regen_frame_type[16];
static uint64_t regen_stream_id[16];
static size_t regen_count;
static void regen_expect(uint64_t frame_type, uint64_t stream_id,
QUIC_TXPIM_PKT *pkt, void *arg)
{
regen_frame_type[regen_count] = frame_type;
regen_stream_id[regen_count] = stream_id;
++regen_count;
}
static const unsigned char placeholder_data[] = "placeholder";
static void cfq_free_cb_(unsigned char *buf, size_t buf_len, void *arg)
{
if (buf == placeholder_data && buf_len == sizeof(placeholder_data))
cfq_freed = 1;
}
#define TEST_KIND_ACK 0
#define TEST_KIND_LOSS 1
#define TEST_KIND_DISCARD 2
#define TEST_KIND_NUM 3
static int test_generic(INFO *info, int kind)
{
int testresult = 0;
size_t i, consumed = 0;
QUIC_TXPIM_PKT *pkt = NULL, *pkt2 = NULL;
OSSL_QUIC_FRAME_STREAM hdr = {0};
OSSL_QTX_IOVEC iov[2];
size_t num_iov;
QUIC_TXPIM_CHUNK chunk = {42, 0, 11, 0};
OSSL_QUIC_FRAME_ACK ack = {0};
OSSL_QUIC_ACK_RANGE ack_ranges[1] = {0};
QUIC_CFQ_ITEM *cfq_item = NULL;
uint32_t pn_space = (kind == TEST_KIND_DISCARD)
? QUIC_PN_SPACE_HANDSHAKE : QUIC_PN_SPACE_APP;
cur_time = ossl_seconds2time(1000);
regen_count = 0;
get_sstream_by_id_p = sstream_expect;
regen_frame_p = regen_expect;
if (!TEST_ptr(pkt = ossl_quic_txpim_pkt_alloc(info->txpim)))
goto err;
for (i = 0; i < 2; ++i) {
num_iov = OSSL_NELEM(iov);
if (!TEST_true(ossl_quic_sstream_append(info->sstream[i],
(unsigned char *)"Test message",
12, &consumed))
|| !TEST_size_t_eq(consumed, 12))
goto err;
if (i == 1)
ossl_quic_sstream_fin(info->sstream[i]);
if (!TEST_true(ossl_quic_sstream_get_stream_frame(info->sstream[i], 0,
&hdr, iov, &num_iov))
|| !TEST_int_eq(hdr.is_fin, i == 1)
|| !TEST_uint64_t_eq(hdr.offset, 0)
|| !TEST_uint64_t_eq(hdr.len, 12)
|| !TEST_size_t_eq(ossl_quic_sstream_get_buffer_used(info->sstream[i]), 12)
|| !TEST_true(ossl_quic_sstream_mark_transmitted(info->sstream[i],
hdr.offset,
hdr.offset + hdr.len - 1)))
goto err;
if (i == 1 && !TEST_true(ossl_quic_sstream_mark_transmitted_fin(info->sstream[i],
hdr.offset + hdr.len)))
goto err;
chunk.has_fin = hdr.is_fin;
chunk.stream_id = 42 + i;
if (!TEST_true(ossl_quic_txpim_pkt_append_chunk(pkt, &chunk)))
goto err;
}
cfq_freed = 0;
if (!TEST_ptr(cfq_item = ossl_quic_cfq_add_frame(info->cfq, 10,
pn_space,
OSSL_QUIC_FRAME_TYPE_NEW_CONN_ID, 0,
placeholder_data,
sizeof(placeholder_data),
cfq_free_cb_, NULL))
|| !TEST_ptr_eq(cfq_item, ossl_quic_cfq_get_priority_head(info->cfq, pn_space)))
goto err;
ossl_quic_txpim_pkt_add_cfq_item(pkt, cfq_item);
pkt->ackm_pkt.pkt_num = 0;
pkt->ackm_pkt.pkt_space = pn_space;
pkt->ackm_pkt.largest_acked = QUIC_PN_INVALID;
pkt->ackm_pkt.num_bytes = 50;
pkt->ackm_pkt.time = cur_time;
pkt->ackm_pkt.is_inflight = 1;
pkt->ackm_pkt.is_ack_eliciting = 1;
if (kind == TEST_KIND_LOSS) {
pkt->had_handshake_done_frame = 1;
pkt->had_max_data_frame = 1;
pkt->had_max_streams_bidi_frame = 1;
pkt->had_max_streams_uni_frame = 1;
pkt->had_ack_frame = 1;
}
ack_ranges[0].start = 0;
ack_ranges[0].end = 0;
ack.ack_ranges = ack_ranges;
ack.num_ack_ranges = 1;
if (!TEST_true(ossl_quic_fifd_pkt_commit(&info->fifd, pkt)))
goto err;
/* CFQ item should have been marked as transmitted */
if (!TEST_ptr_null(ossl_quic_cfq_get_priority_head(info->cfq, pn_space)))
goto err;
switch (kind) {
case TEST_KIND_ACK:
if (!TEST_true(ossl_ackm_on_rx_ack_frame(info->ackm, &ack,
pn_space,
cur_time)))
goto err;
for (i = 0; i < 2; ++i)
if (!TEST_size_t_eq(ossl_quic_sstream_get_buffer_used(info->sstream[i]), 0))
goto err;
/* This should fail, which proves the FIN was acked */
if (!TEST_false(ossl_quic_sstream_mark_lost_fin(info->sstream[1])))
goto err;
/* CFQ item must have been released */
if (!TEST_true(cfq_freed))
goto err;
/* No regen calls should have been made */
if (!TEST_size_t_eq(regen_count, 0))
goto err;
break;
case TEST_KIND_LOSS:
/* Trigger loss detection via packet threshold. */
if (!TEST_ptr(pkt2 = ossl_quic_txpim_pkt_alloc(info->txpim)))
goto err;
step_time(10000);
pkt2->ackm_pkt.pkt_num = 50;
pkt2->ackm_pkt.pkt_space = pn_space;
pkt2->ackm_pkt.largest_acked = QUIC_PN_INVALID;
pkt2->ackm_pkt.num_bytes = 50;
pkt2->ackm_pkt.time = cur_time;
pkt2->ackm_pkt.is_inflight = 1;
pkt2->ackm_pkt.is_ack_eliciting = 1;
ack_ranges[0].start = 50;
ack_ranges[0].end = 50;
ack.ack_ranges = ack_ranges;
ack.num_ack_ranges = 1;
if (!TEST_true(ossl_quic_fifd_pkt_commit(&info->fifd, pkt2))
|| !TEST_true(ossl_ackm_on_rx_ack_frame(info->ackm, &ack,
pn_space, cur_time)))
goto err;
for (i = 0; i < 2; ++i) {
num_iov = OSSL_NELEM(iov);
/*
* Stream data we sent must have been marked as lost; check by
* ensuring it is returned again
*/
if (!TEST_true(ossl_quic_sstream_get_stream_frame(info->sstream[i], 0,
&hdr, iov, &num_iov))
|| !TEST_uint64_t_eq(hdr.offset, 0)
|| !TEST_uint64_t_eq(hdr.len, 12))
goto err;
}
/* FC frame should have regenerated for each stream */
if (!TEST_size_t_eq(regen_count, 7)
|| !TEST_uint64_t_eq(regen_stream_id[0], 42)
|| !TEST_uint64_t_eq(regen_frame_type[0], OSSL_QUIC_FRAME_TYPE_MAX_STREAM_DATA)
|| !TEST_uint64_t_eq(regen_stream_id[1], 43)
|| !TEST_uint64_t_eq(regen_frame_type[1], OSSL_QUIC_FRAME_TYPE_MAX_STREAM_DATA)
|| !TEST_uint64_t_eq(regen_frame_type[2], OSSL_QUIC_FRAME_TYPE_HANDSHAKE_DONE)
|| !TEST_uint64_t_eq(regen_stream_id[2], UINT64_MAX)
|| !TEST_uint64_t_eq(regen_frame_type[3], OSSL_QUIC_FRAME_TYPE_MAX_DATA)
|| !TEST_uint64_t_eq(regen_stream_id[3], UINT64_MAX)
|| !TEST_uint64_t_eq(regen_frame_type[4], OSSL_QUIC_FRAME_TYPE_MAX_STREAMS_BIDI)
|| !TEST_uint64_t_eq(regen_stream_id[4], UINT64_MAX)
|| !TEST_uint64_t_eq(regen_frame_type[5], OSSL_QUIC_FRAME_TYPE_MAX_STREAMS_UNI)
|| !TEST_uint64_t_eq(regen_stream_id[5], UINT64_MAX)
|| !TEST_uint64_t_eq(regen_frame_type[6], OSSL_QUIC_FRAME_TYPE_ACK_WITH_ECN)
|| !TEST_uint64_t_eq(regen_stream_id[6], UINT64_MAX))
goto err;
/* CFQ item should have been marked as lost */
if (!TEST_ptr_eq(cfq_item, ossl_quic_cfq_get_priority_head(info->cfq, pn_space)))
goto err;
/* FIN should have been marked as lost */
num_iov = OSSL_NELEM(iov);
if (!TEST_true(ossl_quic_sstream_get_stream_frame(info->sstream[1], 1,
&hdr, iov, &num_iov))
|| !TEST_true(hdr.is_fin)
|| !TEST_uint64_t_eq(hdr.len, 0))
goto err;
break;
case TEST_KIND_DISCARD:
if (!TEST_true(ossl_ackm_on_pkt_space_discarded(info->ackm, pn_space)))
goto err;
/* CFQ item must have been released */
if (!TEST_true(cfq_freed))
goto err;
break;
default:
goto err;
}
/* TXPIM must have been released */
if (!TEST_size_t_eq(ossl_quic_txpim_get_in_use(info->txpim), 0))
goto err;
testresult = 1;
err:
return testresult;
}
static int test_fifd(int idx)
{
int testresult = 0;
INFO info = {0};
size_t i;
cur_info = &info;
cb_fail = 0;
if (!TEST_true(ossl_statm_init(&info.statm))
|| !TEST_ptr(info.ccdata = ossl_cc_dummy_method.new(fake_now, NULL))
|| !TEST_ptr(info.ackm = ossl_ackm_new(fake_now, NULL,
&info.statm,
&ossl_cc_dummy_method,
info.ccdata))
|| !TEST_true(ossl_ackm_on_handshake_confirmed(info.ackm))
|| !TEST_ptr(info.cfq = ossl_quic_cfq_new())
|| !TEST_ptr(info.txpim = ossl_quic_txpim_new())
|| !TEST_true(ossl_quic_fifd_init(&info.fifd, info.cfq, info.ackm,
info.txpim,
get_sstream_by_id, NULL,
regen_frame, NULL,
confirm_frame, NULL,
sstream_updated, NULL)))
goto err;
for (i = 0; i < OSSL_NELEM(info.sstream); ++i)
if (!TEST_ptr(info.sstream[i] = ossl_quic_sstream_new(1024)))
goto err;
ossl_statm_update_rtt(&info.statm, ossl_time_zero(), ossl_ms2time(1));
if (!TEST_true(test_generic(&info, idx))
|| !TEST_false(cb_fail))
goto err;
testresult = 1;
err:
ossl_quic_fifd_cleanup(&info.fifd);
ossl_quic_cfq_free(info.cfq);
ossl_quic_txpim_free(info.txpim);
ossl_ackm_free(info.ackm);
ossl_statm_destroy(&info.statm);
if (info.ccdata != NULL)
ossl_cc_dummy_method.free(info.ccdata);
for (i = 0; i < OSSL_NELEM(info.sstream); ++i)
ossl_quic_sstream_free(info.sstream[i]);
cur_info = NULL;
return testresult;
}
int setup_tests(void)
{
ADD_ALL_TESTS(test_fifd, TEST_KIND_NUM);
return 1;
}