netdev - [PATCH net-next 1/4] ipv4: Exposing __ip_sock_set

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Date:   Fri, 19 Nov 2021 12:41:34 -0800
From:   Mat Martineau <mathew.j.martineau@...ux.intel.com>
To:     netdev@...r.kernel.org
Cc:     Poorva Sonparote <psonparo@...hat.com>, davem@...emloft.net,
        kuba@...nel.org, matthieu.baerts@...sares.net,
        mptcp@...ts.linux.dev,
        Mat Martineau <mathew.j.martineau@...ux.intel.com>
Subject: [PATCH net-next 1/4] ipv4: Exposing __ip_sock_set_tos() in ip.h

From: Poorva Sonparote <psonparo@...hat.com>

Making the static function __ip_sock_set_tos() from net/ipv4/ip_sockglue.c
accessible by declaring it in include/net/ip.h
The reason for doing this is to use this function to set IP_TOS value in
mptcp_setsockopt() without the lock.

Signed-off-by: Poorva Sonparote <psonparo@...hat.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@...ux.intel.com>
---
 include/net/ip.h       | 1 +
 net/ipv4/ip_sockglue.c | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/net/ip.h b/include/net/ip.h
index 7d1088888c10..81e23a102a0d 100644
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -783,5 +783,6 @@ int ip_sock_set_mtu_discover(struct sock *sk, int val);
 void ip_sock_set_pktinfo(struct sock *sk);
 void ip_sock_set_recverr(struct sock *sk);
 void ip_sock_set_tos(struct sock *sk, int val);
+void  __ip_sock_set_tos(struct sock *sk, int val);
 
 #endif	/* _IP_H */
diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c
index 38d29b175ca6..445a9ecaefa1 100644
--- a/net/ipv4/ip_sockglue.c
+++ b/net/ipv4/ip_sockglue.c
@@ -576,7 +576,7 @@ int ip_recv_error(struct sock *sk, struct msghdr *msg, int len, int *addr_len)
 	return err;
 }
 
-static void __ip_sock_set_tos(struct sock *sk, int val)
+void __ip_sock_set_tos(struct sock *sk, int val)
 {
 	if (sk->sk_type == SOCK_STREAM) {
 		val &= ~INET_ECN_MASK;
-- 
2.34.0