[PATCH liburing 3/6] tests: introduce t_iovec_data_length helper

[Pavel Begunkov <asml.silence@gmail.com>]

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
---
 test/helpers.c    | 10 ++++++++++
 test/helpers.h    |  2 ++
 test/vec-regbuf.c |  6 ++----
 3 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/test/helpers.c b/test/helpers.c
index 18af2be8..15ceb17a 100644
--- a/test/helpers.c
+++ b/test/helpers.c
@@ -526,3 +526,13 @@ int t_submit_and_wait_single(struct io_uring *ring, struct io_uring_cqe **cqe)
 	}
 	return 0;
 }
+
+size_t t_iovec_data_length(struct iovec *iov, unsigned iov_len)
+{
+	size_t sz = 0;
+	int i;
+
+	for (i = 0; i < iov_len; i++)
+		sz += iov[i].iov_len;
+	return sz;
+}
diff --git a/test/helpers.h b/test/helpers.h
index b7465890..a45b8683 100644
--- a/test/helpers.h
+++ b/test/helpers.h
@@ -124,6 +124,8 @@ unsigned long long utime_since_now(struct timeval *tv);
 
 int t_submit_and_wait_single(struct io_uring *ring, struct io_uring_cqe **cqe);
 
+size_t t_iovec_data_length(struct iovec *iov, unsigned iov_len);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/test/vec-regbuf.c b/test/vec-regbuf.c
index 286b78c6..0cbe2c74 100644
--- a/test/vec-regbuf.c
+++ b/test/vec-regbuf.c
@@ -269,7 +269,7 @@ static int test_vec(struct buf_desc *bd, struct iovec *vecs, int nr_vec,
 	struct sockaddr_storage addr;
 	int sock_server, sock_client;
 	struct verify_data vd;
-	size_t total_len = 0;
+	size_t total_len;
 	int i, ret;
 	void *verify_res;
 	pthread_t th;
@@ -284,9 +284,7 @@ static int test_vec(struct buf_desc *bd, struct iovec *vecs, int nr_vec,
 	for (i = 0; i < bd->size; i++)
 		bd->buf_wr[i] = i;
 	memset(bd->buf_rd, 0, bd->size);
-
-	for (i = 0; i < nr_vec; i++)
-		total_len += vecs[i].iov_len;
+	total_len = t_iovec_data_length(vecs, nr_vec);
 
 	vd.bd = bd;
 	vd.vecs = vecs;
-- 
2.49.0