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/* SPDX-License-Identifier: MIT */
/*
* Description: mixed sqes utilizing basic nop and io_uring passthrough commands
*/
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <sys/stat.h>
#include "helpers.h"
#include "liburing.h"
#include "nvme.h"
#define len 0x1000
static unsigned char buf[len];
static int seq;
static int test_single_nop(struct io_uring *ring)
{
struct io_uring_cqe *cqe;
struct io_uring_sqe *sqe;
int ret;
sqe = io_uring_get_sqe(ring);
if (!sqe) {
fprintf(stderr, "get sqe failed\n");
return T_EXIT_FAIL;
}
io_uring_prep_nop(sqe);
sqe->user_data = ++seq;
ret = io_uring_submit(ring);
if (ret <= 0) {
fprintf(stderr, "sqe submit failed: %d\n", ret);
return T_EXIT_FAIL;
}
ret = io_uring_wait_cqe(ring, &cqe);
if (ret < 0) {
fprintf(stderr, "wait completion %d\n", ret);
} else if (cqe->user_data != seq) {
fprintf(stderr, "Unexpected user_data: %ld\n", (long) cqe->user_data);
} else {
io_uring_cqe_seen(ring, cqe);
return T_EXIT_PASS;
}
return T_EXIT_FAIL;
}
static int test_single_nvme_read(struct io_uring *ring, int fd)
{
struct nvme_uring_cmd *cmd;
struct io_uring_cqe *cqe;
struct io_uring_sqe *sqe;
int ret;
sqe = io_uring_get_sqe128(ring);
if (!sqe) {
fprintf(stderr, "get sqe failed\n");
return T_EXIT_FAIL;
}
io_uring_prep_uring_cmd128(sqe, NVME_URING_CMD_IO, fd);
sqe->user_data = ++seq;
cmd = (struct nvme_uring_cmd *)sqe->cmd;
memset(cmd, 0, sizeof(struct nvme_uring_cmd));
cmd->opcode = nvme_cmd_read;
cmd->cdw12 = (len >> lba_shift) - 1;
cmd->addr = (__u64)(uintptr_t)buf;
cmd->data_len = len;
cmd->nsid = nsid;
ret = io_uring_submit(ring);
if (ret <= 0) {
fprintf(stderr, "sqe submit failed: %d\n", ret);
return T_EXIT_FAIL;
}
ret = io_uring_wait_cqe(ring, &cqe);
if (ret < 0) {
fprintf(stderr, "wait completion %d\n", ret);
} else if (cqe->res != 0) {
fprintf(stderr, "cqe res %d, wanted 0\n", cqe->res);
} else if (cqe->user_data != seq) {
fprintf(stderr, "Unexpected user_data: %ld\n", (long) cqe->user_data);
} else {
io_uring_cqe_seen(ring, cqe);
return T_EXIT_PASS;
}
return T_EXIT_FAIL;
}
int main(int argc, char *argv[])
{
struct io_uring ring;
struct stat sb;
int fd, ret, i;
if (argc < 2)
return T_EXIT_SKIP;
ret = nvme_get_info(argv[1]);
if (ret)
return T_EXIT_SKIP;
fd = open(argv[1], O_RDONLY);
if (fd < 0) {
if (errno == EACCES || errno == EPERM)
return T_EXIT_SKIP;
perror("file open");
return T_EXIT_FAIL;
}
if (fstat(fd, &sb) < 0) {
perror("fstat");
ret = T_EXIT_FAIL;
goto close;
}
if (!S_ISCHR(sb.st_mode)) {
ret = T_EXIT_SKIP;
goto close;
}
ret = io_uring_queue_init(8, &ring,
IORING_SETUP_CQE_MIXED | IORING_SETUP_SQE_MIXED);
if (ret) {
if (ret == -EINVAL) {
ret = T_EXIT_SKIP;
} else {
fprintf(stderr, "ring setup failed: %d\n", ret);
ret = T_EXIT_FAIL;
}
goto close;
}
for (i = 0; i < 32; i++) {
if (i & 1)
ret = test_single_nvme_read(&ring, fd);
else
ret = test_single_nop(&ring);
if (ret)
break;
}
io_uring_queue_exit(&ring);
close:
close(fd);
return ret;
}
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