Set ownership bit correctly when copying over CQEs during CQ resize

When resizing a CQ, when copying over unpolled CQEs from the old CQE
buffer to the new buffer, the ownership bit must be set appropriately
for the new buffer, or the ownership bit in the new buffer gets
corrupted.

Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/cq.c b/src/cq.c
index 68e16e9..8226b6b 100644
--- a/src/cq.c
+++ b/src/cq.c
@@ -455,6 +455,8 @@ void mlx4_cq_resize_copy_cqes(struct mlx4_cq *cq, void *buf, int old_cqe)
 	cqe = get_cqe(cq, (i & old_cqe));
 
 	while ((cqe->owner_sr_opcode & MLX4_CQE_OPCODE_MASK) != MLX4_CQE_OPCODE_RESIZE) {
+		cqe->owner_sr_opcode = (cqe->owner_sr_opcode & ~MLX4_CQE_OWNER_MASK) |
+			(((i + 1) & (cq->ibv_cq.cqe + 1)) ? MLX4_CQE_OWNER_MASK : 0);
 		memcpy(buf + ((i + 1) & cq->ibv_cq.cqe) * MLX4_CQ_ENTRY_SIZE,
 		       cqe, MLX4_CQ_ENTRY_SIZE);
 		++i;