netdev - [PATCH] [net/ipv6] Remove redundant null check in hbh

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Date:   Wed, 24 Jun 2020 22:46:04 -0400
From:   Gaurav Singh <gaurav1086@...il.com>
To:     gaurav1086@...il.com, Pablo Neira Ayuso <pablo@...filter.org>,
        Jozsef Kadlecsik <kadlec@...filter.org>,
        Florian Westphal <fw@...len.de>,
        "David S. Miller" <davem@...emloft.net>,
        Alexey Kuznetsov <kuznet@....inr.ac.ru>,
        Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
        Jakub Kicinski <kuba@...nel.org>,
        netfilter-devel@...r.kernel.org (open list:NETFILTER),
        coreteam@...filter.org (open list:NETFILTER),
        netdev@...r.kernel.org (open list:NETWORKING [IPv4/IPv6]),
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH] [net/ipv6] Remove redundant null check in hbh_mt6

oh cannot be NULL since its already checked above after
assignment and is being dereferenced before. Remove the
redundant null check.

Signed-off-by: Gaurav Singh <gaurav1086@...il.com>
---
 net/ipv6/netfilter/ip6t_hbh.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/net/ipv6/netfilter/ip6t_hbh.c b/net/ipv6/netfilter/ip6t_hbh.c
index 467b2a86031b..e7a3fb9355ee 100644
--- a/net/ipv6/netfilter/ip6t_hbh.c
+++ b/net/ipv6/netfilter/ip6t_hbh.c
@@ -86,8 +86,7 @@ hbh_mt6(const struct sk_buff *skb, struct xt_action_param *par)
 		  ((optinfo->hdrlen == hdrlen) ^
 		   !!(optinfo->invflags & IP6T_OPTS_INV_LEN))));
 
-	ret = (oh != NULL) &&
-	      (!(optinfo->flags & IP6T_OPTS_LEN) ||
+	ret = (!(optinfo->flags & IP6T_OPTS_LEN) ||
 	       ((optinfo->hdrlen == hdrlen) ^
 		!!(optinfo->invflags & IP6T_OPTS_INV_LEN)));
 
-- 
2.17.1