linux-kernel - [PATCH v1] RDMA/sa_query: use validate not parser in ib_nl_is_good_resolve

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Date: Sat, 30 Dec 2023 13:19:56 +0800
From: Lin Ma <linma@....edu.cn>
To: jgg@...pe.ca,
	leon@...nel.org,
	gustavoars@...nel.org,
	bvanassche@....org,
	markzhang@...dia.com,
	linma@....edu.cn,
	linux-rdma@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v1] RDMA/sa_query: use validate not parser in ib_nl_is_good_resolve_resp

The attributes array `tb` in ib_nl_is_good_resolve_resp is never used
after the parsing. Therefore use nla_validate_deprecated function here
for improvement.

Signed-off-by: Lin Ma <linma@....edu.cn>
---
 drivers/infiniband/core/sa_query.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/infiniband/core/sa_query.c b/drivers/infiniband/core/sa_query.c
index 8175dde60b0a..c7407a53fcda 100644
--- a/drivers/infiniband/core/sa_query.c
+++ b/drivers/infiniband/core/sa_query.c
@@ -1047,14 +1047,13 @@ int ib_nl_handle_set_timeout(struct sk_buff *skb,
 
 static inline int ib_nl_is_good_resolve_resp(const struct nlmsghdr *nlh)
 {
-	struct nlattr *tb[LS_NLA_TYPE_MAX];
 	int ret;
 
 	if (nlh->nlmsg_flags & RDMA_NL_LS_F_ERR)
 		return 0;
 
-	ret = nla_parse_deprecated(tb, LS_NLA_TYPE_MAX - 1, nlmsg_data(nlh),
-				   nlmsg_len(nlh), ib_nl_policy, NULL);
+	ret = nla_validate_deprecated(nlmsg_data(nlh), nlmsg_len(nlh),
+				      LS_NLA_TYPE_MAX - 1, ib_nl_policy, NULL);
 	if (ret)
 		return 0;
 
-- 
2.17.1