In a later kernel release there will be deferred completions of multishot
ops. Add a test to ensure ordering is preserved when there is an error
during the multishot operation.
Signed-off-by: Dylan Yudaken <dylany@xxxxxxxx>
---
test/recv-multishot.c | 85 +++++++++++++++++++++++++++++++++++++++++++
1 file changed, 85 insertions(+)
diff --git a/test/recv-multishot.c b/test/recv-multishot.c
index ed26a5f78759..08a2e8629f5b 100644
--- a/test/recv-multishot.c
+++ b/test/recv-multishot.c
@@ -9,6 +9,7 @@
#include <sys/types.h>
#include <sys/socket.h>
#include <pthread.h>
+#include <assert.h>
#include "liburing.h"
#include "helpers.h"
@@ -469,6 +470,84 @@ cleanup:
return ret;
}
+static int test_enobuf(void)
+{
+ struct io_uring ring;
+ struct io_uring_sqe *sqe;
+ struct io_uring_cqe *cqes[16];
+ char buffs[256];
+ int ret, i, fds[2];
+
+ if (t_create_ring(8, &ring, 0) != T_SETUP_OK) {
+ fprintf(stderr, "ring create\n");
+ return -1;
+ }
+
+ ret = t_create_socket_pair(fds, false);
+ if (ret) {
+ fprintf(stderr, "t_create_socket_pair\n");
+ return ret;
+ }
+
+ sqe = io_uring_get_sqe(&ring);
+ assert(sqe);
+ /* deliberately only 2 provided buffers */
+ io_uring_prep_provide_buffers(sqe, &buffs[0], 1, 2, 0, 0);
+ io_uring_sqe_set_data64(sqe, 0);
+
+ sqe = io_uring_get_sqe(&ring);
+ assert(sqe);
+ io_uring_prep_recv_multishot(sqe, fds[0], NULL, 0, 0);
+ io_uring_sqe_set_data64(sqe, 1);
+ sqe->buf_group = 0;
+ sqe->flags |= IOSQE_BUFFER_SELECT;
+
+ ret = io_uring_submit(&ring);
+ if (ret != 2) {
+ fprintf(stderr, "bad submit %d\n", ret);
+ return -1;
+ }
+ for (i = 0; i < 3; i++) {
+ do {
+ ret = write(fds[1], "?", 1);
+ } while (ret == -1 && errno == EINTR);
+ }
+
+ ret = io_uring_wait_cqes(&ring, &cqes[0], 4, NULL, NULL);
+ if (ret) {
+ fprintf(stderr, "wait cqes\n");
+ return ret;
+ }
+
+ ret = io_uring_peek_batch_cqe(&ring, &cqes[0], 4);
+ if (ret != 4) {
+ fprintf(stderr, "peek batch cqes\n");
+ return -1;
+ }
+
+ /* provide buffers */
+ assert(cqes[0]->user_data == 0);
+ assert(cqes[0]->res == 0);
+
+ /* valid recv */
+ assert(cqes[1]->user_data == 1);
+ assert(cqes[2]->user_data == 1);
+ assert(cqes[1]->res == 1);
+ assert(cqes[2]->res == 1);
+ assert(cqes[1]->flags & (IORING_CQE_F_BUFFER | IORING_CQE_F_MORE));
+ assert(cqes[2]->flags & (IORING_CQE_F_BUFFER | IORING_CQE_F_MORE));
+
+ /* missing buffer */
+ assert(cqes[3]->user_data == 1);
+ assert(cqes[3]->res == -ENOBUFS);
+ assert(!(cqes[3]->flags & (IORING_CQE_F_BUFFER | IORING_CQE_F_MORE)));
+
+ close(fds[0]);
+ close(fds[1]);
+ io_uring_queue_exit(&ring);
+ return 0;
+}
+
int main(int argc, char *argv[])
{
int ret;
@@ -509,5 +588,11 @@ int main(int argc, char *argv[])
}
}
+ ret = test_enobuf();
+ if (ret) {
+ fprintf(stderr, "test_enobuf() failed: %d\n", ret);
+ return T_EXIT_FAIL;
+ }
+
return T_EXIT_PASS;
}
base-commit: b90a28636e5b5efe6dc1383acc90aec61814d9ba
--
2.30.2
