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authorJens Axboe <axboe@kernel.dk>2019-04-17 08:57:25 -0600
committerJens Axboe <axboe@kernel.dk>2019-04-17 08:57:25 -0600
commit26993e98723e1f2d9be94b53068ead1e4a9a849d (patch)
tree858ad640e2efde42743f64ff7a556a8c68de9a61 /test
parent8115820eb9343d4fa49f4933a2fd7d7006796cc3 (diff)
Add SQ/CQ overflow tests
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'test')
-rw-r--r--test/Makefile9
-rw-r--r--test/cq-full.c86
-rw-r--r--test/sq-full.c41
3 files changed, 134 insertions, 2 deletions
diff --git a/test/Makefile b/test/Makefile
index faf5fa6..63bf67a 100644
--- a/test/Makefile
+++ b/test/Makefile
@@ -1,12 +1,13 @@
CFLAGS ?= -g -O2 -Wall -D_GNU_SOURCE -L../src/
all_targets += io_uring-test io_uring-cp poll poll-cancel ring-leak fsync \
- io_uring_setup io_uring_register io_uring_enter nop
+ io_uring_setup io_uring_register io_uring_enter nop sq-full cq-full
all: $(all_targets)
test_srcs := io_uring-test.c io_uring-cp.c poll.c poll-cancel.c ring-leak.c \
- fsync.c io_uring_setup.c io_uring_register.c io_uring_enter.c nop.c
+ fsync.c io_uring_setup.c io_uring_register.c io_uring_enter.c nop.c \
+ sq-full.c cq-full.c
test_objs := $(patsubst %.c,%.ol,$(test_srcs))
@@ -30,6 +31,10 @@ io_uring_enter: io_uring_enter.c
$(CC) $(CFLAGS) -o $@ io_uring_enter.c -luring
nop: nop.c
$(CC) $(CFLAGS) -o $@ nop.c -luring
+sq-full: sq-full.c
+ $(CC) $(CFLAGS) -o $@ sq-full.c -luring
+cq-full: cq-full.c
+ $(CC) $(CFLAGS) -o $@ cq-full.c -luring
clean:
rm -f $(all_targets) $(test_objs)
diff --git a/test/cq-full.c b/test/cq-full.c
new file mode 100644
index 0000000..426eb4a
--- /dev/null
+++ b/test/cq-full.c
@@ -0,0 +1,86 @@
+/*
+ * Description: test CQ ring overflow
+ *
+ */
+#include <errno.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+
+#include "../src/liburing.h"
+
+static int queue_n_nops(struct io_uring *ring, int n)
+{
+ struct io_uring_sqe *sqe;
+ int i, ret;
+
+ for (i = 0; i < n; i++) {
+ sqe = io_uring_get_sqe(ring);
+ if (!sqe) {
+ printf("get sqe failed\n");
+ goto err;
+ }
+
+ io_uring_prep_nop(sqe);
+ }
+
+ ret = io_uring_submit(ring);
+ if (ret < n) {
+ printf("Submitted only %d\n", ret);
+ goto err;
+ } else if (ret < 0) {
+ printf("sqe submit failed: %d\n", ret);
+ goto err;
+ }
+
+ return 0;
+err:
+ return 1;
+}
+
+int main(int argc, char *argv[])
+{
+ struct io_uring_cqe *cqe;
+ struct io_uring ring;
+ int i, ret;
+
+ ret = io_uring_queue_init(4, &ring, 0);
+ if (ret) {
+ printf("ring setup failed\n");
+ return 1;
+
+ }
+
+ if (queue_n_nops(&ring, 4))
+ goto err;
+ if (queue_n_nops(&ring, 4))
+ goto err;
+ if (queue_n_nops(&ring, 4))
+ goto err;
+
+ i = 0;
+ do {
+ ret = io_uring_get_completion(&ring, &cqe);
+ if (ret < 0) {
+ printf("wait completion %d\n", ret);
+ goto err;
+ }
+ if (!cqe)
+ break;
+ i++;
+ } while (1);
+
+ if (i != 8 || *ring.cq.koverflow != 4) {
+ printf("CQ overflow fail: %d completions, %u overflow\n", i,
+ *ring.cq.koverflow);
+ goto err;
+ }
+
+ io_uring_queue_exit(&ring);
+ return 0;
+err:
+ io_uring_queue_exit(&ring);
+ return 1;
+}
diff --git a/test/sq-full.c b/test/sq-full.c
new file mode 100644
index 0000000..5bf7f72
--- /dev/null
+++ b/test/sq-full.c
@@ -0,0 +1,41 @@
+/*
+ * Description: test SQ queue full condition
+ *
+ */
+#include <errno.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+
+#include "../src/liburing.h"
+
+int main(int argc, char *argv[])
+{
+ struct io_uring_sqe *sqe;
+ struct io_uring ring;
+ int ret, i;
+
+ ret = io_uring_queue_init(8, &ring, 0);
+ if (ret) {
+ printf("ring setup failed\n");
+ return 1;
+
+ }
+
+ i = 0;
+ while ((sqe = io_uring_get_sqe(&ring)) != NULL)
+ i++;
+
+ if (i != 8) {
+ printf("Got %d SQEs\n", i);
+ goto err;
+ }
+
+ io_uring_queue_exit(&ring);
+ return 0;
+err:
+ io_uring_queue_exit(&ring);
+ return 1;
+}