test/msg-ring: add test cases for IORING_OP_MSG_RINGwakeup-ring

Signed-off-by: Jens Axboe <axboe@kernel.dk>

3 files changed, 237 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
index 9b74880..ae16633 100644
--- a/.gitignore
+++ b/.gitignore
@@ -76,6 +76,7 @@
 /test/link_drain
 /test/madvise
 /test/mkdir
+/test/msg-ring
 /test/nop
 /test/nop-all-sizes
 /test/open-close
diff --git a/test/Makefile b/test/Makefile
index 9dae002..1019113 100644
--- a/test/Makefile
+++ b/test/Makefile
@@ -93,6 +93,7 @@ test_srcs := \
 	link-timeout.c \
 	madvise.c \
 	mkdir.c \
+	msg-ring.c \
 	multicqes_drain.c \
 	nop-all-sizes.c \
 	nop.c \
@@ -221,6 +222,7 @@ ring-leak2: override LDFLAGS += -lpthread
 poll-mshot-update: override LDFLAGS += -lpthread
 exit-no-cleanup: override LDFLAGS += -lpthread
 pollfree: override LDFLAGS += -lpthread
+msg-ring: override LDFLAGS += -lpthread
 
 install: $(test_targets) runtests.sh runtests-loop.sh
 	$(INSTALL) -D -d -m 755 $(datadir)/liburing-test/
diff --git a/test/msg-ring.c b/test/msg-ring.c
new file mode 100644
index 0000000..8930e72
--- /dev/null
+++ b/test/msg-ring.c
@@ -0,0 +1,234 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Description: test ring messaging command
+ *
+ */
+#include <errno.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include <pthread.h>
+
+#include "liburing.h"
+
+static int no_msg;
+
+static int test_own(struct io_uring *ring)
+{
+	struct io_uring_cqe *cqe;
+	struct io_uring_sqe *sqe;
+	int ret, i;
+
+	sqe = io_uring_get_sqe(ring);
+	if (!sqe) {
+		fprintf(stderr, "get sqe failed\n");
+		goto err;
+	}
+
+	io_uring_prep_msg_ring(sqe, ring->ring_fd, 0x10, 0x1234, 0);
+	sqe->user_data = 1;
+
+	ret = io_uring_submit(ring);
+	if (ret <= 0) {
+		fprintf(stderr, "sqe submit failed: %d\n", ret);
+		goto err;
+	}
+
+	for (i = 0; i < 2; i++) {
+		ret = io_uring_wait_cqe(ring, &cqe);
+		if (ret < 0) {
+			fprintf(stderr, "wait completion %d\n", ret);
+			goto err;
+		}
+		switch (cqe->user_data) {
+		case 1:
+			if (cqe->res == -EINVAL || cqe->res == -EOPNOTSUPP) {
+				no_msg = 1;
+				return 0;
+			}
+			if (cqe->res != 0) {
+				fprintf(stderr, "cqe res %d\n", cqe->res);
+				return -1;
+			}
+			break;
+		case 0x1234:
+			if (!(cqe->flags & IORING_CQE_F_MSG)) {
+				fprintf(stderr, "invalid flags %x\n", cqe->flags);
+				return -1;
+			}
+			if (cqe->res != 0x10) {
+				fprintf(stderr, "invalid len %x\n", cqe->res);
+				return -1;
+			}
+			break;
+		default:
+			fprintf(stderr, "Invalid user_data\n");
+			return -1;
+		}
+		io_uring_cqe_seen(ring, cqe);
+	}
+
+	return 0;
+err:
+	return 1;
+}
+
+static void *wait_cqe_fn(void *data)
+{
+	struct io_uring *ring = data;
+	struct io_uring_cqe *cqe;
+	int ret;
+
+	ret = io_uring_wait_cqe(ring, &cqe);
+	if (ret) {
+		fprintf(stderr, "wait cqe %d\n", ret);
+		goto err;
+	}
+
+	if (!(cqe->flags & IORING_CQE_F_MSG)) {
+		fprintf(stderr, "invalid flags %x\n", cqe->flags);
+		goto err;
+	}
+	if (cqe->user_data != 0x5aa5) {
+		fprintf(stderr, "user_data %llx\n", (long long) cqe->user_data);
+		goto err;
+	}
+	if (cqe->res != 0x20) {
+		fprintf(stderr, "len %x\n", cqe->res);
+		goto err;
+	}
+
+	return NULL;
+err:
+	return (void *) (unsigned long) 1;
+}
+
+static int test_remote(struct io_uring *ring, struct io_uring *target)
+{
+	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");
+		goto err;
+	}
+
+	io_uring_prep_msg_ring(sqe, target->ring_fd, 0x20, 0x5aa5, 0);
+	sqe->user_data = 1;
+
+	ret = io_uring_submit(ring);
+	if (ret <= 0) {
+		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 != 0) {
+		fprintf(stderr, "cqe res %d\n", cqe->res);
+		return -1;
+	}
+	if (cqe->user_data != 1) {
+		fprintf(stderr, "user_data %llx\n", (long long) cqe->user_data);
+		return -1;
+	}
+
+	io_uring_cqe_seen(ring, cqe);
+	return 0;
+err:
+	return 1;
+}
+
+static int test_invalid(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");
+		goto err;
+	}
+
+	io_uring_prep_msg_ring(sqe, 1, 0, 0x8989, 0);
+	sqe->user_data = 1;
+
+	ret = io_uring_submit(ring);
+	if (ret <= 0) {
+		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 != -EBADFD) {
+		fprintf(stderr, "cqe res %d\n", cqe->res);
+		return -1;
+	}
+
+	io_uring_cqe_seen(ring, cqe);
+	return 0;
+err:
+	return 1;
+}
+
+int main(int argc, char *argv[])
+{
+	struct io_uring ring, ring2;
+	pthread_t thread;
+	void *tret;
+	int ret;
+
+	if (argc > 1)
+		return 0;
+
+	ret = io_uring_queue_init(8, &ring, 0);
+	if (ret) {
+		fprintf(stderr, "ring setup failed: %d\n", ret);
+		return 1;
+	}
+	ret = io_uring_queue_init(8, &ring2, 0);
+	if (ret) {
+		fprintf(stderr, "ring setup failed: %d\n", ret);
+		return 1;
+	}
+
+	ret = test_own(&ring);
+	if (ret) {
+		fprintf(stderr, "test_own failed\n");
+		return ret;
+	}
+	if (no_msg) {
+		fprintf(stdout, "Skipped\n");
+		return 0;
+	}
+
+	ret = test_invalid(&ring);
+	if (ret) {
+		fprintf(stderr, "test_invalid failed\n");
+		return ret;
+	}
+
+	pthread_create(&thread, NULL, wait_cqe_fn, &ring2);
+
+	ret = test_remote(&ring, &ring2);
+	if (ret) {
+		fprintf(stderr, "test_remote failed\n");
+		return ret;
+	}
+
+	pthread_join(thread, &tret);
+
+	return 0;
+}