rdma-core/0040-libhns-Fix-memory-leakage-when-DCA-is-enabled.patch

From cf0f83bda170e85fe425c02965af3c28be9368aa Mon Sep 17 00:00:00 2001
From: wenglianfa <wenglianfa@huawei.com>
Date: Thu, 25 Jul 2024 11:06:01 +0800
Subject: [PATCH] libhns: Fix memory leakage when DCA is enabled

driver inclusion
category: feature
bugzilla: https://gitee.com/src-openeuler/rdma-core/issues/IB66RT

------------------------------------------------------------------

After DCA is enabled and a QP is created, the memory block
applied for DCA is not free when the QP is destroyed. Here
fix it.

Fixes:26e79aa7eb8d ("libhns: Add support for attaching QP's WQE buffer")
Signed-off-by: wenglianfa <wenglianfa@huawei.com>
Signed-off-by: Xinghai Cen <cenxinghai@h-partners.com>
---
 providers/hns/hns_roce_u_verbs.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/providers/hns/hns_roce_u_verbs.c b/providers/hns/hns_roce_u_verbs.c
index e30880c..bfa25ff 100644
--- a/providers/hns/hns_roce_u_verbs.c
+++ b/providers/hns/hns_roce_u_verbs.c
@@ -1357,7 +1357,11 @@ static void qp_free_wqe(struct hns_roce_qp *qp)
 
 	if (qp->rq.wqe_cnt)
 		free(qp->rq.wrid);
-	hns_roce_free_buf(&qp->buf);
+
+	if (qp->dca_wqe.bufs)
+		free(qp->dca_wqe.bufs);
+	else
+		hns_roce_free_buf(&qp->buf);
 }
 
 static int qp_alloc_wqe(struct ibv_qp_init_attr_ex *attr,
-- 
2.25.1