ecc80dfcfb
Add a new API for incremental copying in or out of an iovec, and replace current code to use the new API. Signed-off-by: John Levon <john.levon@nutanix.com> Change-Id: I088b784aef821310699478989e61411952066c18 Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/16193 Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Aleksey Marchuk <alexeymar@nvidia.com> Reviewed-by: Jim Harris <james.r.harris@intel.com> Reviewed-by: Ben Walker <benjamin.walker@intel.com>
359 lines
8.0 KiB
C
359 lines
8.0 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright (C) 2019 Intel Corporation.
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* All rights reserved.
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*/
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#include "spdk/stdinc.h"
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#include "spdk_cunit.h"
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#include "util/iov.c"
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static int
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_check_val(void *buf, size_t len, uint8_t val)
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{
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size_t i;
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uint8_t *data = buf;
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for (i = 0; i < len; i++) {
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if (data[i] != val) {
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return -1;
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}
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}
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return 0;
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}
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static void
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test_single_iov(void)
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{
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struct iovec siov[1];
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struct iovec diov[1];
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uint8_t sdata[64];
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uint8_t ddata[64];
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ssize_t rc;
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/* Simplest cases- 1 element in each iovec. */
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/* Same size. */
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memset(sdata, 1, sizeof(sdata));
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memset(ddata, 0, sizeof(ddata));
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siov[0].iov_base = sdata;
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siov[0].iov_len = sizeof(sdata);
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diov[0].iov_base = ddata;
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diov[0].iov_len = sizeof(ddata);
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rc = spdk_iovcpy(siov, 1, diov, 1);
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CU_ASSERT(rc == sizeof(sdata));
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CU_ASSERT(_check_val(ddata, 64, 1) == 0);
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/* Source smaller than dest */
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memset(sdata, 1, sizeof(sdata));
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memset(ddata, 0, sizeof(ddata));
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siov[0].iov_base = sdata;
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siov[0].iov_len = 48;
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diov[0].iov_base = ddata;
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diov[0].iov_len = sizeof(ddata);
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rc = spdk_iovcpy(siov, 1, diov, 1);
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CU_ASSERT(rc == 48);
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CU_ASSERT(_check_val(ddata, 48, 1) == 0);
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CU_ASSERT(_check_val(&ddata[48], 16, 0) == 0);
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/* Dest smaller than source */
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memset(sdata, 1, sizeof(sdata));
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memset(ddata, 0, sizeof(ddata));
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siov[0].iov_base = sdata;
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siov[0].iov_len = sizeof(sdata);
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diov[0].iov_base = ddata;
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diov[0].iov_len = 48;
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rc = spdk_iovcpy(siov, 1, diov, 1);
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CU_ASSERT(rc == 48);
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CU_ASSERT(_check_val(ddata, 48, 1) == 0);
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CU_ASSERT(_check_val(&ddata[48], 16, 0) == 0);
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}
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static void
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test_simple_iov(void)
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{
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struct iovec siov[4];
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struct iovec diov[4];
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uint8_t sdata[64];
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uint8_t ddata[64];
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ssize_t rc;
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int i;
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/* Simple cases with 4 iov elements */
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/* Same size. */
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memset(sdata, 1, sizeof(sdata));
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memset(ddata, 0, sizeof(ddata));
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for (i = 0; i < 4; i++) {
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siov[i].iov_base = sdata + (16 * i);
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siov[i].iov_len = 16;
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diov[i].iov_base = ddata + (16 * i);
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diov[i].iov_len = 16;
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}
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rc = spdk_iovcpy(siov, 4, diov, 4);
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CU_ASSERT(rc == sizeof(sdata));
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CU_ASSERT(_check_val(ddata, 64, 1) == 0);
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/* Source smaller than dest */
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memset(sdata, 1, sizeof(sdata));
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memset(ddata, 0, sizeof(ddata));
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for (i = 0; i < 4; i++) {
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siov[i].iov_base = sdata + (8 * i);
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siov[i].iov_len = 8;
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diov[i].iov_base = ddata + (16 * i);
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diov[i].iov_len = 16;
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}
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rc = spdk_iovcpy(siov, 4, diov, 4);
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CU_ASSERT(rc == 32);
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CU_ASSERT(_check_val(ddata, 32, 1) == 0);
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CU_ASSERT(_check_val(&ddata[32], 32, 0) == 0);
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/* Dest smaller than source */
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memset(sdata, 1, sizeof(sdata));
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memset(ddata, 0, sizeof(ddata));
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for (i = 0; i < 4; i++) {
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siov[i].iov_base = sdata + (16 * i);
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siov[i].iov_len = 16;
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diov[i].iov_base = ddata + (8 * i);
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diov[i].iov_len = 8;
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}
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rc = spdk_iovcpy(siov, 4, diov, 4);
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CU_ASSERT(rc == 32);
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CU_ASSERT(_check_val(ddata, 32, 1) == 0);
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CU_ASSERT(_check_val(&ddata[32], 32, 0) == 0);
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}
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static void
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test_complex_iov(void)
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{
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struct iovec siov[4];
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struct iovec diov[4];
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uint8_t sdata[64];
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uint8_t ddata[64];
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ssize_t rc;
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int i;
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/* More source elements */
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memset(sdata, 1, sizeof(sdata));
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memset(ddata, 0, sizeof(ddata));
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for (i = 0; i < 4; i++) {
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siov[i].iov_base = sdata + (16 * i);
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siov[i].iov_len = 16;
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}
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diov[0].iov_base = ddata;
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diov[0].iov_len = sizeof(ddata);
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rc = spdk_iovcpy(siov, 4, diov, 1);
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CU_ASSERT(rc == sizeof(sdata));
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CU_ASSERT(_check_val(ddata, 64, 1) == 0);
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/* More dest elements */
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memset(sdata, 1, sizeof(sdata));
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memset(ddata, 0, sizeof(ddata));
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for (i = 0; i < 4; i++) {
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diov[i].iov_base = ddata + (16 * i);
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diov[i].iov_len = 16;
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}
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siov[0].iov_base = sdata;
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siov[0].iov_len = sizeof(sdata);
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rc = spdk_iovcpy(siov, 1, diov, 4);
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CU_ASSERT(rc == sizeof(sdata));
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CU_ASSERT(_check_val(ddata, 64, 1) == 0);
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/* Build one by hand that's really terrible */
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memset(sdata, 1, sizeof(sdata));
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memset(ddata, 0, sizeof(ddata));
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siov[0].iov_base = sdata;
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siov[0].iov_len = 1;
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siov[1].iov_base = siov[0].iov_base + siov[0].iov_len;
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siov[1].iov_len = 13;
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siov[2].iov_base = siov[1].iov_base + siov[1].iov_len;
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siov[2].iov_len = 6;
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siov[3].iov_base = siov[2].iov_base + siov[2].iov_len;
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siov[3].iov_len = 44;
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diov[0].iov_base = ddata;
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diov[0].iov_len = 31;
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diov[1].iov_base = diov[0].iov_base + diov[0].iov_len;
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diov[1].iov_len = 9;
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diov[2].iov_base = diov[1].iov_base + diov[1].iov_len;
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diov[2].iov_len = 1;
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diov[3].iov_base = diov[2].iov_base + diov[2].iov_len;
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diov[3].iov_len = 23;
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rc = spdk_iovcpy(siov, 4, diov, 4);
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CU_ASSERT(rc == 64);
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CU_ASSERT(_check_val(ddata, 64, 1) == 0);
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}
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static void
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test_iovs_to_buf(void)
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{
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struct iovec iov[4];
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uint8_t sdata[64];
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uint8_t ddata[64];
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memset(&sdata, 1, sizeof(sdata));
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memset(&ddata, 6, sizeof(ddata));
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iov[0].iov_base = sdata;
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iov[0].iov_len = 3;
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iov[1].iov_base = iov[0].iov_base + iov[0].iov_len;
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iov[1].iov_len = 11;
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iov[2].iov_base = iov[1].iov_base + iov[1].iov_len;
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iov[2].iov_len = 21;
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iov[3].iov_base = iov[2].iov_base + iov[2].iov_len;
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iov[3].iov_len = 29;
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spdk_copy_iovs_to_buf(ddata, 64, iov, 4);
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CU_ASSERT(_check_val(ddata, 64, 1) == 0);
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}
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static void
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test_buf_to_iovs(void)
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{
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struct iovec iov[4];
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uint8_t sdata[64];
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uint8_t ddata[64];
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uint8_t iov_buffer[64];
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memset(&sdata, 7, sizeof(sdata));
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memset(&ddata, 4, sizeof(ddata));
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memset(&iov_buffer, 1, sizeof(iov_buffer));
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iov[0].iov_base = iov_buffer;
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iov[0].iov_len = 5;
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iov[1].iov_base = iov[0].iov_base + iov[0].iov_len;
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iov[1].iov_len = 15;
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iov[2].iov_base = iov[1].iov_base + iov[1].iov_len;
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iov[2].iov_len = 21;
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iov[3].iov_base = iov[2].iov_base + iov[2].iov_len;
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iov[3].iov_len = 23;
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spdk_copy_buf_to_iovs(iov, 4, sdata, 64);
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spdk_copy_iovs_to_buf(ddata, 64, iov, 4);
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CU_ASSERT(_check_val(ddata, 64, 7) == 0);
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}
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static void
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test_memset(void)
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{
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struct iovec iov[4];
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uint8_t iov_buffer[64];
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memset(&iov_buffer, 1, sizeof(iov_buffer));
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iov[0].iov_base = iov_buffer;
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iov[0].iov_len = 5;
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iov[1].iov_base = iov[0].iov_base + iov[0].iov_len;
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iov[1].iov_len = 15;
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iov[2].iov_base = iov[1].iov_base + iov[1].iov_len;
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iov[2].iov_len = 21;
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iov[3].iov_base = iov[2].iov_base + iov[2].iov_len;
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iov[3].iov_len = 23;
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spdk_iov_memset(iov, 4, 0);
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CU_ASSERT(_check_val(iov_buffer, 64, 0) == 0);
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}
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static void
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test_iov_one(void)
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{
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struct iovec iov = { 0 };
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int iovcnt;
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char buf[4];
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spdk_iov_one(&iov, &iovcnt, buf, sizeof(buf));
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CU_ASSERT(iov.iov_base == buf);
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CU_ASSERT(iov.iov_len == sizeof(buf));
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CU_ASSERT(iovcnt == 1);
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}
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static void
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test_iov_xfer(void)
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{
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struct spdk_iov_xfer ix;
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uint8_t data[64] = { 0 };
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uint8_t iov_buffer[64];
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struct iovec iov[4];
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size_t i;
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for (i = 0; i < sizeof(iov_buffer); i++) {
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iov_buffer[i] = i;
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}
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iov[0].iov_base = iov_buffer;
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iov[0].iov_len = 5;
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iov[1].iov_base = iov[0].iov_base + iov[0].iov_len;
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iov[1].iov_len = 15;
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iov[2].iov_base = iov[1].iov_base + iov[1].iov_len;
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iov[2].iov_len = 21;
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iov[3].iov_base = iov[2].iov_base + iov[2].iov_len;
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iov[3].iov_len = 23;
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spdk_iov_xfer_init(&ix, iov, 4);
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spdk_iov_xfer_to_buf(&ix, data, 8);
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spdk_iov_xfer_to_buf(&ix, data + 8, 56);
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for (i = 0; i < sizeof(data); i++) {
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CU_ASSERT(data[i] == i);
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}
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for (i = 0; i < sizeof(data); i++) {
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data[i] = sizeof(data) - i;
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}
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spdk_iov_xfer_init(&ix, iov, 4);
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spdk_iov_xfer_from_buf(&ix, data, 5);
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spdk_iov_xfer_from_buf(&ix, data + 5, 3);
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spdk_iov_xfer_from_buf(&ix, data + 8, 56);
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for (i = 0; i < sizeof(iov_buffer); i++) {
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CU_ASSERT(iov_buffer[i] == sizeof(iov_buffer) - i);
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}
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}
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int
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main(int argc, char **argv)
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{
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CU_pSuite suite = NULL;
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unsigned int num_failures;
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CU_set_error_action(CUEA_ABORT);
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CU_initialize_registry();
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suite = CU_add_suite("iov", NULL, NULL);
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CU_ADD_TEST(suite, test_single_iov);
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CU_ADD_TEST(suite, test_simple_iov);
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CU_ADD_TEST(suite, test_complex_iov);
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CU_ADD_TEST(suite, test_iovs_to_buf);
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CU_ADD_TEST(suite, test_buf_to_iovs);
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CU_ADD_TEST(suite, test_memset);
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CU_ADD_TEST(suite, test_iov_one);
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CU_ADD_TEST(suite, test_iov_xfer);
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CU_basic_set_mode(CU_BRM_VERBOSE);
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CU_basic_run_tests();
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num_failures = CU_get_number_of_failures();
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CU_cleanup_registry();
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return num_failures;
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}
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