diff options
Diffstat (limited to 'test/skip-cqe.c')
| -rw-r--r-- | test/skip-cqe.c | 429 |
1 files changed, 429 insertions, 0 deletions
diff --git a/test/skip-cqe.c b/test/skip-cqe.c new file mode 100644 index 0000000..99b882b --- /dev/null +++ b/test/skip-cqe.c @@ -0,0 +1,429 @@ +/* SPDX-License-Identifier: MIT */ +#include <errno.h> +#include <stdio.h> +#include <unistd.h> +#include <stdlib.h> +#include <string.h> +#include <fcntl.h> +#include <assert.h> + +#include "liburing.h" + +#define LINK_SIZE 6 +#define TIMEOUT_USER_DATA (-1) + +static int fds[2]; + +/* should be successfully submitted but fails during execution */ +static void prep_exec_fail_req(struct io_uring_sqe *sqe) +{ + io_uring_prep_write(sqe, fds[1], NULL, 100, 0); +} + +static int test_link_success(struct io_uring *ring, int nr, bool skip_last) +{ + struct io_uring_cqe *cqe; + struct io_uring_sqe *sqe; + int ret, i; + + for (i = 0; i < nr; ++i) { + sqe = io_uring_get_sqe(ring); + io_uring_prep_nop(sqe); + if (i != nr - 1 || skip_last) + sqe->flags |= IOSQE_IO_LINK | IOSQE_CQE_SKIP_SUCCESS; + sqe->user_data = i; + } + + ret = io_uring_submit(ring); + if (ret != nr) { + fprintf(stderr, "sqe submit failed: %d\n", ret); + goto err; + } + + if (!skip_last) { + ret = io_uring_wait_cqe(ring, &cqe); + if (ret != 0) { + fprintf(stderr, "wait completion %d\n", ret); + goto err; + } + if (cqe->res != 0) { + fprintf(stderr, "nop failed: res %d\n", cqe->res); + goto err; + } + if (cqe->user_data != nr - 1) { + fprintf(stderr, "invalid user_data %i\n", (int)cqe->user_data); + goto err; + } + io_uring_cqe_seen(ring, cqe); + } + + if (io_uring_peek_cqe(ring, &cqe) >= 0) { + fprintf(stderr, "single CQE expected %i\n", (int)cqe->user_data); + goto err; + } + return 0; +err: + return 1; +} + +static int test_link_fail(struct io_uring *ring, int nr, int fail_idx) +{ + struct io_uring_cqe *cqe; + struct io_uring_sqe *sqe; + int ret, i; + + for (i = 0; i < nr; ++i) { + sqe = io_uring_get_sqe(ring); + if (i == fail_idx) + prep_exec_fail_req(sqe); + else + io_uring_prep_nop(sqe); + + if (i != nr - 1) + sqe->flags |= IOSQE_IO_LINK | IOSQE_CQE_SKIP_SUCCESS; + sqe->user_data = i; + } + + ret = io_uring_submit(ring); + if (ret != nr) { + fprintf(stderr, "sqe submit failed: %d\n", ret); + goto err; + } + ret = io_uring_wait_cqe(ring, &cqe); + if (ret != 0) { + fprintf(stderr, "wait completion %d\n", ret); + goto err; + } + if (!cqe->res || cqe->user_data != fail_idx) { + fprintf(stderr, "got: user_data %d res %d, expected data: %d\n", + (int)cqe->user_data, cqe->res, fail_idx); + goto err; + } + io_uring_cqe_seen(ring, cqe); + + if (io_uring_peek_cqe(ring, &cqe) >= 0) { + fprintf(stderr, "single CQE expected %i\n", (int)cqe->user_data); + goto err; + } + return 0; +err: + return 1; +} + +static int test_ltimeout_cancel(struct io_uring *ring, int nr, int tout_idx, + bool async, int fail_idx) +{ + struct __kernel_timespec ts = {.tv_sec = 1, .tv_nsec = 0}; + struct io_uring_cqe *cqe; + struct io_uring_sqe *sqe; + int ret, i; + int e_res = 0, e_idx = nr - 1; + + if (fail_idx >= 0) { + e_res = -EFAULT; + e_idx = fail_idx; + } + + for (i = 0; i < nr; ++i) { + sqe = io_uring_get_sqe(ring); + if (i == fail_idx) + prep_exec_fail_req(sqe); + else + io_uring_prep_nop(sqe); + sqe->user_data = i; + sqe->flags |= IOSQE_IO_LINK; + if (async) + sqe->flags |= IOSQE_ASYNC; + if (i != nr - 1) + sqe->flags |= IOSQE_CQE_SKIP_SUCCESS; + + if (i == tout_idx) { + sqe = io_uring_get_sqe(ring); + io_uring_prep_link_timeout(sqe, &ts, 0); + sqe->flags |= IOSQE_IO_LINK | IOSQE_CQE_SKIP_SUCCESS; + sqe->user_data = TIMEOUT_USER_DATA; + } + } + + ret = io_uring_submit(ring); + if (ret != nr + 1) { + fprintf(stderr, "sqe submit failed: %d\n", ret); + goto err; + } + ret = io_uring_wait_cqe(ring, &cqe); + if (ret != 0) { + fprintf(stderr, "wait completion %d\n", ret); + goto err; + } + if (cqe->user_data != e_idx) { + fprintf(stderr, "invalid user_data %i\n", (int)cqe->user_data); + goto err; + } + if (cqe->res != e_res) { + fprintf(stderr, "unexpected res: %d\n", cqe->res); + goto err; + } + io_uring_cqe_seen(ring, cqe); + + if (io_uring_peek_cqe(ring, &cqe) >= 0) { + fprintf(stderr, "single CQE expected %i\n", (int)cqe->user_data); + goto err; + } + return 0; +err: + return 1; +} + +static int test_ltimeout_fire(struct io_uring *ring, bool async, + bool skip_main, bool skip_tout) +{ + char buf[1]; + struct __kernel_timespec ts = {.tv_sec = 0, .tv_nsec = 1000000}; + struct io_uring_cqe *cqe; + struct io_uring_sqe *sqe; + int ret, i; + int nr = 1 + !skip_tout; + + sqe = io_uring_get_sqe(ring); + io_uring_prep_read(sqe, fds[0], buf, sizeof(buf), 0); + sqe->flags |= IOSQE_IO_LINK; + sqe->flags |= async ? IOSQE_ASYNC : 0; + sqe->flags |= skip_main ? IOSQE_CQE_SKIP_SUCCESS : 0; + sqe->user_data = 0; + + sqe = io_uring_get_sqe(ring); + io_uring_prep_link_timeout(sqe, &ts, 0); + sqe->flags |= skip_tout ? IOSQE_CQE_SKIP_SUCCESS : 0; + sqe->user_data = 1; + + ret = io_uring_submit(ring); + if (ret != 2) { + fprintf(stderr, "sqe submit failed: %d\n", ret); + return 1; + } + + for (i = 0; i < nr; i++) { + ret = io_uring_wait_cqe(ring, &cqe); + if (ret != 0) { + fprintf(stderr, "wait completion %d\n", ret); + return 1; + } + switch (cqe->user_data) { + case 0: + if (cqe->res != -ECANCELED && cqe->res != -EINTR) { + fprintf(stderr, "unexpected read return: %d\n", cqe->res); + return 1; + } + break; + case 1: + if (skip_tout) { + fprintf(stderr, "extra timeout cqe, %d\n", cqe->res); + return 1; + } + break; + } + io_uring_cqe_seen(ring, cqe); + } + + + if (io_uring_peek_cqe(ring, &cqe) >= 0) { + fprintf(stderr, "single CQE expected: got data: %i res: %i\n", + (int)cqe->user_data, cqe->res); + return 1; + } + return 0; +} + +static int test_hardlink(struct io_uring *ring, int nr, int fail_idx, + int skip_idx, bool hardlink_last) +{ + struct io_uring_cqe *cqe; + struct io_uring_sqe *sqe; + int ret, i; + + assert(fail_idx < nr); + assert(skip_idx < nr); + + for (i = 0; i < nr; i++) { + sqe = io_uring_get_sqe(ring); + if (i == fail_idx) + prep_exec_fail_req(sqe); + else + io_uring_prep_nop(sqe); + if (i != nr - 1 || hardlink_last) + sqe->flags |= IOSQE_IO_HARDLINK; + if (i == skip_idx) + sqe->flags |= IOSQE_CQE_SKIP_SUCCESS; + sqe->user_data = i; + } + + ret = io_uring_submit(ring); + if (ret != nr) { + fprintf(stderr, "sqe submit failed: %d\n", ret); + goto err; + } + + for (i = 0; i < nr; i++) { + if (i == skip_idx && fail_idx != skip_idx) + continue; + + ret = io_uring_wait_cqe(ring, &cqe); + if (ret != 0) { + fprintf(stderr, "wait completion %d\n", ret); + goto err; + } + if (cqe->user_data != i) { + fprintf(stderr, "invalid user_data %d (%i)\n", + (int)cqe->user_data, i); + goto err; + } + if (i == fail_idx) { + if (cqe->res >= 0) { + fprintf(stderr, "req should've failed %d %d\n", + (int)cqe->user_data, cqe->res); + goto err; + } + } else { + if (cqe->res) { + fprintf(stderr, "req error %d %d\n", + (int)cqe->user_data, cqe->res); + goto err; + } + } + + io_uring_cqe_seen(ring, cqe); + } + + if (io_uring_peek_cqe(ring, &cqe) >= 0) { + fprintf(stderr, "single CQE expected %i\n", (int)cqe->user_data); + goto err; + } + return 0; +err: + return 1; +} + +int main(int argc, char *argv[]) +{ + struct io_uring ring; + int ret, i, j, k; + int mid_idx = LINK_SIZE / 2; + int last_idx = LINK_SIZE - 1; + + if (argc > 1) + return 0; + + if (pipe(fds)) { + fprintf(stderr, "pipe() failed\n"); + return 1; + } + ret = io_uring_queue_init(16, &ring, 0); + if (ret) { + fprintf(stderr, "ring setup failed: %d\n", ret); + return 1; + } + + if (!(ring.features & IORING_FEAT_CQE_SKIP)) { + printf("IOSQE_CQE_SKIP_SUCCESS is not supported, skip\n"); + return 0; + } + + for (i = 0; i < 4; i++) { + bool skip_last = i & 1; + int sz = (i & 2) ? LINK_SIZE : 1; + + ret = test_link_success(&ring, sz, skip_last); + if (ret) { + fprintf(stderr, "test_link_success sz %d, %d last\n", + skip_last, sz); + return ret; + } + } + + ret = test_link_fail(&ring, LINK_SIZE, mid_idx); + if (ret) { + fprintf(stderr, "test_link_fail mid failed\n"); + return ret; + } + + ret = test_link_fail(&ring, LINK_SIZE, last_idx); + if (ret) { + fprintf(stderr, "test_link_fail last failed\n"); + return ret; + } + + for (i = 0; i < 2; i++) { + bool async = i & 1; + + ret = test_ltimeout_cancel(&ring, 1, 0, async, -1); + if (ret) { + fprintf(stderr, "test_ltimeout_cancel 1 failed, %i\n", + async); + return ret; + } + ret = test_ltimeout_cancel(&ring, LINK_SIZE, mid_idx, async, -1); + if (ret) { + fprintf(stderr, "test_ltimeout_cancel mid failed, %i\n", + async); + return ret; + } + ret = test_ltimeout_cancel(&ring, LINK_SIZE, last_idx, async, -1); + if (ret) { + fprintf(stderr, "test_ltimeout_cancel last failed, %i\n", + async); + return ret; + } + ret = test_ltimeout_cancel(&ring, LINK_SIZE, mid_idx, async, mid_idx); + if (ret) { + fprintf(stderr, "test_ltimeout_cancel fail mid failed, %i\n", + async); + return ret; + } + ret = test_ltimeout_cancel(&ring, LINK_SIZE, mid_idx, async, mid_idx - 1); + if (ret) { + fprintf(stderr, "test_ltimeout_cancel fail2 mid failed, %i\n", + async); + return ret; + } + ret = test_ltimeout_cancel(&ring, LINK_SIZE, mid_idx, async, mid_idx + 1); + if (ret) { + fprintf(stderr, "test_ltimeout_cancel fail3 mid failed, %i\n", + async); + return ret; + } + } + + for (i = 0; i < 8; i++) { + bool async = i & 1; + bool skip1 = i & 2; + bool skip2 = i & 4; + + ret = test_ltimeout_fire(&ring, async, skip1, skip2); + if (ret) { + fprintf(stderr, "test_ltimeout_fire failed\n"); + return ret; + } + } + + /* test 3 positions, start/middle/end of the link, i.e. indexes 0, 3, 6 */ + for (i = 0; i < 3; i++) { + for (j = 0; j < 3; j++) { + for (k = 0; k < 2; k++) { + bool mark_last = k & 1; + + ret = test_hardlink(&ring, 7, i * 3, j * 3, mark_last); + if (ret) { + fprintf(stderr, "test_hardlink failed" + "fail %i skip %i mark last %i\n", + i * 3, j * 3, k); + return 1; + } + } + } + } + + close(fds[0]); + close(fds[1]); + io_uring_queue_exit(&ring); + return 0; +} |