linux-kernel - [PATCH net-next] net: Use _K_SS_MAXSIZE instead of absolute value

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Message-Id: <20230719084415.1378696-1-leitao@debian.org>
Date:   Wed, 19 Jul 2023 01:44:12 -0700
From:   Breno Leitao <leitao@...ian.org>
To:     "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>
Cc:     leit@...a.com, Kuniyuki Iwashima <kuniyu@...zon.com>,
        Alexei Starovoitov <ast@...nel.org>,
        Martin KaFai Lau <martin.lau@...nel.org>,
        Alexander Mikhalitsyn <alexander@...alicyn.com>,
        David Howells <dhowells@...hat.com>,
        Jason Xing <kernelxing@...cent.com>,
        Xin Long <lucien.xin@...il.com>,
        netdev@...r.kernel.org (open list:NETWORKING [GENERAL]),
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH net-next] net: Use _K_SS_MAXSIZE instead of absolute value

Looking at sk_getsockopt function, it is unclear why 128 is a magical
number.

Use the proper macro, so it becomes clear to understand what the value
mean, and get a reference where it is coming from (user-exported API).

Signed-off-by: Breno Leitao <leitao@...ian.org>
---
 net/core/sock.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/core/sock.c b/net/core/sock.c
index 9370fd50aa2c..58b6f00197d6 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -1815,7 +1815,7 @@ int sk_getsockopt(struct sock *sk, int level, int optname,
 
 	case SO_PEERNAME:
 	{
-		char address[128];
+		char address[_K_SS_MAXSIZE];
 
 		lv = sock->ops->getname(sock, (struct sockaddr *)address, 2);
 		if (lv < 0)
-- 
2.34.1