netdev - [PATCH] ipv6: ICMPV6: Use swap() instead of open coding it

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]

Date:   Fri, 14 Jan 2022 00:17:31 +0800
From:   Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>
To:     davem@...emloft.net
Cc:     yoshfuji@...ux-ipv6.org, dsahern@...nel.org, kuba@...nel.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>,
        Abaci Robot <abaci@...ux.alibaba.com>
Subject: [PATCH] ipv6: ICMPV6: Use swap() instead of open coding it

Clean the following coccicheck warning:

./net/ipv6/icmp.c:348:25-26: WARNING opportunity for swap().

Reported-by: Abaci Robot <abaci@...ux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>
---
 net/ipv6/icmp.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c
index 96c5cc0f30ce..8d2ab5f2f8b6 100644
--- a/net/ipv6/icmp.c
+++ b/net/ipv6/icmp.c
@@ -336,7 +336,6 @@ static void mip6_addr_swap(struct sk_buff *skb, const struct inet6_skb_parm *opt
 {
 	struct ipv6hdr *iph = ipv6_hdr(skb);
 	struct ipv6_destopt_hao *hao;
-	struct in6_addr tmp;
 	int off;
 
 	if (opt->dsthao) {
@@ -344,9 +343,7 @@ static void mip6_addr_swap(struct sk_buff *skb, const struct inet6_skb_parm *opt
 		if (likely(off >= 0)) {
 			hao = (struct ipv6_destopt_hao *)
 					(skb_network_header(skb) + off);
-			tmp = iph->saddr;
-			iph->saddr = hao->addr;
-			hao->addr = tmp;
+			swap(iph->saddr, hao->addr);
 		}
 	}
 }
-- 
2.20.1.7.g153144c