linux-kernel - [PATCH] samples/bpf: fix swap.cocci warning

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20211208113408.45237-1-hanyihao@vivo.com>
Date:   Wed,  8 Dec 2021 03:34:07 -0800
From:   Yihao Han <hanyihao@...o.com>
To:     Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>,
        Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...nel.org>, netdev@...r.kernel.org,
        bpf@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     kernel@...o.com, Yihao Han <hanyihao@...o.com>
Subject: [PATCH] samples/bpf: fix swap.cocci warning

Fix following swap.cocci warning:
./samples/bpf/xsk_fwd.c:660:22-23:
WARNING opportunity for swap()

Signed-off-by: Yihao Han <hanyihao@...o.com>
---
 samples/bpf/xsk_fwd.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/samples/bpf/xsk_fwd.c b/samples/bpf/xsk_fwd.c
index 1cd97c84c337..e82582b225d3 100644
--- a/samples/bpf/xsk_fwd.c
+++ b/samples/bpf/xsk_fwd.c
@@ -653,9 +653,7 @@ static void swap_mac_addresses(void *data)
 	struct ether_addr *dst_addr = (struct ether_addr *)&eth->ether_dhost;
 	struct ether_addr tmp;
 
-	tmp = *src_addr;
-	*src_addr = *dst_addr;
-	*dst_addr = tmp;
+	swap(*src_addr, *dst_addr);
 }
 
 static void *
-- 
2.17.1