From: Maxim Galaganov <max@internet.ru>
Date: Fri, 3 Dec 2021 22:35:40 +0000 (-0800)
Subject: mptcp: expose mptcp_check_and_set_pending
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=8b38217a2a98df6240c0cddb6f18d04923e24277;p=linux.git

mptcp: expose mptcp_check_and_set_pending

Expose the mptcp_check_and_set_pending() function for use inside MPTCP
sockopt code. The next patch will call it when TCP_CORK is cleared or
TCP_NODELAY is set on the MPTCP socket in order to push pending data
from mptcp_release_cb().

Acked-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-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>
---

diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c
index 943f74e804bd0..f124cca125d24 100644
--- a/net/mptcp/protocol.c
+++ b/net/mptcp/protocol.c
@@ -1502,7 +1502,7 @@ static void mptcp_update_post_push(struct mptcp_sock *msk,
 		msk->snd_nxt = snd_nxt_new;
 }
 
-static void mptcp_check_and_set_pending(struct sock *sk)
+void mptcp_check_and_set_pending(struct sock *sk)
 {
 	if (mptcp_send_head(sk) &&
 	    !test_bit(MPTCP_PUSH_PENDING, &mptcp_sk(sk)->flags))
diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h
index bb51fa7f5566d..147b22da41ca0 100644
--- a/net/mptcp/protocol.h
+++ b/net/mptcp/protocol.h
@@ -555,6 +555,7 @@ unsigned int mptcp_stale_loss_cnt(const struct net *net);
 void mptcp_subflow_fully_established(struct mptcp_subflow_context *subflow,
 				     struct mptcp_options_received *mp_opt);
 bool __mptcp_retransmit_pending_data(struct sock *sk);
+void mptcp_check_and_set_pending(struct sock *sk);
 void __mptcp_push_pending(struct sock *sk, unsigned int flags);
 bool mptcp_subflow_data_available(struct sock *sk);
 void __init mptcp_subflow_init(void);