From: Eric Dumazet <edumazet@google.com>
Date: Fri, 17 Mar 2023 15:55:34 +0000 (+0000)
Subject: dccp: preserve const qualifier in dccp_sk()
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=ae6084b739925d84ef4a481d8eaa2187455f2e2f;p=users%2Fjedix%2Flinux-maple.git

dccp: preserve const qualifier in dccp_sk()

We can change dccp_sk() to propagate its argument const qualifier,
thanks to container_of_const().

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/include/linux/dccp.h b/include/linux/dccp.h
index 07e547c02fd8..325af611909f 100644
--- a/include/linux/dccp.h
+++ b/include/linux/dccp.h
@@ -305,10 +305,8 @@ struct dccp_sock {
 	struct timer_list		dccps_xmit_timer;
 };
 
-static inline struct dccp_sock *dccp_sk(const struct sock *sk)
-{
-	return (struct dccp_sock *)sk;
-}
+#define dccp_sk(ptr)	container_of_const(ptr, struct dccp_sock, \
+					   dccps_inet_connection.icsk_inet.sk)
 
 static inline const char *dccp_role(const struct sock *sk)
 {