commit 6fadaa565882cd7afc501de5921db6f5e45c784b
author Maxim Galaganov <max@internet.ru> Fri Dec 03 14:35:39 2021 -0800
committer Jakub Kicinski <kuba@kernel.org> Tue Dec 07 11:36:30 2021 -0800
tree 429d70160947c4d2e6a6200ccbcbcc5e30cc4cc4
parent edb596e80cee8f9cab4c37907c8004456e5b3581

tcp: expose __tcp_sock_set_cork and __tcp_sock_set_nodelay

Expose __tcp_sock_set_cork() and __tcp_sock_set_nodelay() for use in
MPTCP setsockopt code -- namely for syncing MPTCP socket options with
subflows inside sync_socket_options() while already holding the subflow
socket lock.

Acked-by: Paolo Abeni <pabeni@redhat.com>
Acked-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Maxim Galaganov <max@internet.ru>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

net/ipv4/tcp.c

diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 6ab82e1a..2005461 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -3207,7 +3207,7 @@ static void tcp_enable_tx_delay(void)
  * TCP_CORK can be set together with TCP_NODELAY and it is stronger than
  * TCP_NODELAY.
  */
-static void __tcp_sock_set_cork(struct sock *sk, bool on)
+void __tcp_sock_set_cork(struct sock *sk, bool on)
 {
 	struct tcp_sock *tp = tcp_sk(sk);
 
@@ -3235,7 +3235,7 @@ EXPORT_SYMBOL(tcp_sock_set_cork);
  * However, when TCP_NODELAY is set we make an explicit push, which overrides
  * even TCP_CORK for currently queued segments.
  */
-static void __tcp_sock_set_nodelay(struct sock *sk, bool on)
+void __tcp_sock_set_nodelay(struct sock *sk, bool on)
 {
 	if (on) {
 		tcp_sk(sk)->nonagle |= TCP_NAGLE_OFF|TCP_NAGLE_PUSH;