linux-kernel - [PATCH] tcp_cubic: use memset and offsetof init

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Message-Id: <1610597696-128610-1-git-send-email-yejune.deng@gmail.com>
Date:   Thu, 14 Jan 2021 12:14:56 +0800
From:   Yejune Deng <yejune.deng@...il.com>
To:     edumazet@...gle.com, davem@...emloft.net, kuznet@....inr.ac.ru,
        yoshfuji@...ux-ipv6.org, kuba@...nel.org
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        yejune.deng@...il.com
Subject: [PATCH] tcp_cubic: use memset and offsetof init

In bictcp_reset(), use memset and offsetof instead of = 0.

Signed-off-by: Yejune Deng <yejune.deng@...il.com>
---
 net/ipv4/tcp_cubic.c | 11 +----------
 1 file changed, 1 insertion(+), 10 deletions(-)

diff --git a/net/ipv4/tcp_cubic.c b/net/ipv4/tcp_cubic.c
index c7bf5b2..ffcbe46 100644
--- a/net/ipv4/tcp_cubic.c
+++ b/net/ipv4/tcp_cubic.c
@@ -104,16 +104,7 @@ struct bictcp {
 
 static inline void bictcp_reset(struct bictcp *ca)
 {
-	ca->cnt = 0;
-	ca->last_max_cwnd = 0;
-	ca->last_cwnd = 0;
-	ca->last_time = 0;
-	ca->bic_origin_point = 0;
-	ca->bic_K = 0;
-	ca->delay_min = 0;
-	ca->epoch_start = 0;
-	ca->ack_cnt = 0;
-	ca->tcp_cwnd = 0;
+	memset(ca, 0, offsetof(struct bictcp, unused));
 	ca->found = 0;
 }
 
-- 
1.9.1