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Spdk/test/unit/lib/util/iov.c/iov_ut.c
yidong0635 dabca25646 util: Extract a common lib between iovs and buf. 
It's useful to add these APIs.
spdk_copy_iovs_to_buf and spdk_copy_buf_to_iovs.

It prepares that other ones can call these.
We don't need to define them in static state
repeatedly.

And add corresponding unit tests.

Change-Id: Ife40fec8d047a48af67b04e6c055e4932282abfb
Signed-off-by: yidong0635 <dongx.yi@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/12075
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
2022-06-20 10:01:15 +00:00

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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright (c) Intel Corporation.
* All rights reserved.
*/
#include "spdk/stdinc.h"
#include "spdk_cunit.h"
#include "util/iov.c"
static int
_check_val(void *buf, size_t len, uint8_t val)
{
size_t i;
uint8_t *data = buf;
for (i = 0; i < len; i++) {
if (data[i] != val) {
return -1;
}
}
return 0;
}
static void
test_single_iov(void)
{
struct iovec siov[1];
struct iovec diov[1];
uint8_t sdata[64];
uint8_t ddata[64];
ssize_t rc;
/* Simplest cases- 1 element in each iovec. */
/* Same size. */
memset(sdata, 1, sizeof(sdata));
memset(ddata, 0, sizeof(ddata));
siov[0].iov_base = sdata;
siov[0].iov_len = sizeof(sdata);
diov[0].iov_base = ddata;
diov[0].iov_len = sizeof(ddata);
rc = spdk_iovcpy(siov, 1, diov, 1);
CU_ASSERT(rc == sizeof(sdata));
CU_ASSERT(_check_val(ddata, 64, 1) == 0);
/* Source smaller than dest */
memset(sdata, 1, sizeof(sdata));
memset(ddata, 0, sizeof(ddata));
siov[0].iov_base = sdata;
siov[0].iov_len = 48;
diov[0].iov_base = ddata;
diov[0].iov_len = sizeof(ddata);
rc = spdk_iovcpy(siov, 1, diov, 1);
CU_ASSERT(rc == 48);
CU_ASSERT(_check_val(ddata, 48, 1) == 0);
CU_ASSERT(_check_val(&ddata[48], 16, 0) == 0);
/* Dest smaller than source */
memset(sdata, 1, sizeof(sdata));
memset(ddata, 0, sizeof(ddata));
siov[0].iov_base = sdata;
siov[0].iov_len = sizeof(sdata);
diov[0].iov_base = ddata;
diov[0].iov_len = 48;
rc = spdk_iovcpy(siov, 1, diov, 1);
CU_ASSERT(rc == 48);
CU_ASSERT(_check_val(ddata, 48, 1) == 0);
CU_ASSERT(_check_val(&ddata[48], 16, 0) == 0);
}
static void
test_simple_iov(void)
{
struct iovec siov[4];
struct iovec diov[4];
uint8_t sdata[64];
uint8_t ddata[64];
ssize_t rc;
int i;
/* Simple cases with 4 iov elements */
/* Same size. */
memset(sdata, 1, sizeof(sdata));
memset(ddata, 0, sizeof(ddata));
for (i = 0; i < 4; i++) {
siov[i].iov_base = sdata + (16 * i);
siov[i].iov_len = 16;
diov[i].iov_base = ddata + (16 * i);
diov[i].iov_len = 16;
}
rc = spdk_iovcpy(siov, 4, diov, 4);
CU_ASSERT(rc == sizeof(sdata));
CU_ASSERT(_check_val(ddata, 64, 1) == 0);
/* Source smaller than dest */
memset(sdata, 1, sizeof(sdata));
memset(ddata, 0, sizeof(ddata));
for (i = 0; i < 4; i++) {
siov[i].iov_base = sdata + (8 * i);
siov[i].iov_len = 8;
diov[i].iov_base = ddata + (16 * i);
diov[i].iov_len = 16;
}
rc = spdk_iovcpy(siov, 4, diov, 4);
CU_ASSERT(rc == 32);
CU_ASSERT(_check_val(ddata, 32, 1) == 0);
CU_ASSERT(_check_val(&ddata[32], 32, 0) == 0);
/* Dest smaller than source */
memset(sdata, 1, sizeof(sdata));
memset(ddata, 0, sizeof(ddata));
for (i = 0; i < 4; i++) {
siov[i].iov_base = sdata + (16 * i);
siov[i].iov_len = 16;
diov[i].iov_base = ddata + (8 * i);
diov[i].iov_len = 8;
}
rc = spdk_iovcpy(siov, 4, diov, 4);
CU_ASSERT(rc == 32);
CU_ASSERT(_check_val(ddata, 32, 1) == 0);
CU_ASSERT(_check_val(&ddata[32], 32, 0) == 0);
}
static void
test_complex_iov(void)
{
struct iovec siov[4];
struct iovec diov[4];
uint8_t sdata[64];
uint8_t ddata[64];
ssize_t rc;
int i;
/* More source elements */
memset(sdata, 1, sizeof(sdata));
memset(ddata, 0, sizeof(ddata));
for (i = 0; i < 4; i++) {
siov[i].iov_base = sdata + (16 * i);
siov[i].iov_len = 16;
}
diov[0].iov_base = ddata;
diov[0].iov_len = sizeof(ddata);
rc = spdk_iovcpy(siov, 4, diov, 1);
CU_ASSERT(rc == sizeof(sdata));
CU_ASSERT(_check_val(ddata, 64, 1) == 0);
/* More dest elements */
memset(sdata, 1, sizeof(sdata));
memset(ddata, 0, sizeof(ddata));
for (i = 0; i < 4; i++) {
diov[i].iov_base = ddata + (16 * i);
diov[i].iov_len = 16;
}
siov[0].iov_base = sdata;
siov[0].iov_len = sizeof(sdata);
rc = spdk_iovcpy(siov, 1, diov, 4);
CU_ASSERT(rc == sizeof(sdata));
CU_ASSERT(_check_val(ddata, 64, 1) == 0);
/* Build one by hand that's really terrible */
memset(sdata, 1, sizeof(sdata));
memset(ddata, 0, sizeof(ddata));
siov[0].iov_base = sdata;
siov[0].iov_len = 1;
siov[1].iov_base = siov[0].iov_base + siov[0].iov_len;
siov[1].iov_len = 13;
siov[2].iov_base = siov[1].iov_base + siov[1].iov_len;
siov[2].iov_len = 6;
siov[3].iov_base = siov[2].iov_base + siov[2].iov_len;
siov[3].iov_len = 44;
diov[0].iov_base = ddata;
diov[0].iov_len = 31;
diov[1].iov_base = diov[0].iov_base + diov[0].iov_len;
diov[1].iov_len = 9;
diov[2].iov_base = diov[1].iov_base + diov[1].iov_len;
diov[2].iov_len = 1;
diov[3].iov_base = diov[2].iov_base + diov[2].iov_len;
diov[3].iov_len = 23;
rc = spdk_iovcpy(siov, 4, diov, 4);
CU_ASSERT(rc == 64);
CU_ASSERT(_check_val(ddata, 64, 1) == 0);
}
static void
test_iovs_to_buf(void)
{
struct iovec iov[4];
uint8_t sdata[64];
uint8_t ddata[64];
memset(&sdata, 1, sizeof(sdata));
memset(&ddata, 6, sizeof(ddata));
iov[0].iov_base = sdata;
iov[0].iov_len = 3;
iov[1].iov_base = iov[0].iov_base + iov[0].iov_len;
iov[1].iov_len = 11;
iov[2].iov_base = iov[1].iov_base + iov[1].iov_len;
iov[2].iov_len = 21;
iov[3].iov_base = iov[2].iov_base + iov[2].iov_len;
iov[3].iov_len = 29;
spdk_copy_iovs_to_buf(ddata, 64, iov, 4);
CU_ASSERT(_check_val(ddata, 64, 1) == 0);
}
static void
test_buf_to_iovs(void)
{
struct iovec iov[4];
uint8_t sdata[64];
uint8_t ddata[64];
memset(&sdata, 7, sizeof(sdata));
memset(&ddata, 4, sizeof(ddata));
iov[0].iov_base = sdata;
iov[0].iov_len = 5;
iov[1].iov_base = iov[0].iov_base + iov[0].iov_len;
iov[1].iov_len = 15;
iov[2].iov_base = iov[1].iov_base + iov[1].iov_len;
iov[2].iov_len = 21;
iov[3].iov_base = iov[2].iov_base + iov[2].iov_len;
iov[3].iov_len = 23;
spdk_copy_buf_to_iovs(iov, 4, sdata, 64);
spdk_copy_iovs_to_buf(ddata, 64, iov, 4);
CU_ASSERT(_check_val(ddata, 64, 7) == 0);
}
int
main(int argc, char **argv)
{
CU_pSuite suite = NULL;
unsigned int num_failures;
CU_set_error_action(CUEA_ABORT);
CU_initialize_registry();
suite = CU_add_suite("iov", NULL, NULL);
CU_ADD_TEST(suite, test_single_iov);
CU_ADD_TEST(suite, test_simple_iov);
CU_ADD_TEST(suite, test_complex_iov);
CU_ADD_TEST(suite, test_iovs_to_buf);
CU_ADD_TEST(suite, test_buf_to_iovs);
CU_basic_set_mode(CU_BRM_VERBOSE);
CU_basic_run_tests();
num_failures = CU_get_number_of_failures();
CU_cleanup_registry();
return num_failures;
}
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