[PATCH v3 3/6] liburing: return correct ring size for large CQE's

[Stefan Roesch <shr@xxxxxx>]

Return the correct ring_size when large CQE's are used.

Signed-off-by: Stefan Roesch <shr@xxxxxx>
---
 src/setup.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/setup.c b/src/setup.c
index dd6a712..d2adc7f 100644
--- a/src/setup.c
+++ b/src/setup.c
@@ -257,8 +257,11 @@ static size_t rings_size(struct io_uring_params *p, unsigned entries,
 {
 	size_t pages, sq_size, cq_size;
 
-	cq_size = KRING_SIZE;
-	cq_size += cq_entries * sizeof(struct io_uring_cqe);
+	cq_size = sizeof(struct io_uring_cqe);
+	if (p->flags & IORING_SETUP_CQE32)
+		cq_size += sizeof(struct io_uring_cqe);
+	cq_size *= cq_entries;
+	cq_size += KRING_SIZE;
 	cq_size = (cq_size + 63) & ~63UL;
 	pages = (size_t) 1 << npages(cq_size, page_size);
 
-- 
2.30.2