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Date: Tue, 25 Aug 2020 08:10:37 -0400 From: Miaohe Lin <linmiaohe@...wei.com> To: <davem@...emloft.net>, <kuznet@....inr.ac.ru>, <yoshfuji@...ux-ipv6.org>, <kuba@...nel.org> CC: <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>, <linmiaohe@...wei.com> Subject: [PATCH] net: Remove duplicated midx check against 0 Check midx against 0 is always equal to check midx against sk_bound_dev_if when sk_bound_dev_if is known not equal to 0 in these case. Signed-off-by: Miaohe Lin <linmiaohe@...wei.com> --- net/ipv4/ip_sockglue.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c index d2c223554ff7..ec6036713e2c 100644 --- a/net/ipv4/ip_sockglue.c +++ b/net/ipv4/ip_sockglue.c @@ -1124,8 +1124,7 @@ static int do_ip_setsockopt(struct sock *sk, int level, int optname, dev_put(dev); err = -EINVAL; - if (sk->sk_bound_dev_if && - (!midx || midx != sk->sk_bound_dev_if)) + if (sk->sk_bound_dev_if && midx != sk->sk_bound_dev_if) break; inet->uc_index = ifindex; @@ -1189,7 +1188,7 @@ static int do_ip_setsockopt(struct sock *sk, int level, int optname, err = -EINVAL; if (sk->sk_bound_dev_if && mreq.imr_ifindex != sk->sk_bound_dev_if && - (!midx || midx != sk->sk_bound_dev_if)) + midx != sk->sk_bound_dev_if) break; inet->mc_index = mreq.imr_ifindex; -- 2.19.1
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