tcp: tcp_enter_quickack_mode() should be static

[ Upstream commit 03b123debcbc8db987bda17ed8412cc011064c22 ]

After commit d2ccd7bc8acd ("tcp: avoid resetting ACK timer in DCTCP"),
tcp_enter_quickack_mode() is only used from net/ipv4/tcp_input.c.

Fixes: d2ccd7bc8acd ("tcp: avoid resetting ACK timer in DCTCP")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Yuchung Cheng <ycheng@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Link: https://lore.kernel.org/r/20230718162049.1444938-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/include/net/tcp.h b/include/net/tcp.h
index e9c8f88..5fd69f2 100644 (file)
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -355,7 +355,6 @@ ssize_t tcp_splice_read(struct socket *sk, loff_t *ppos,
 struct sk_buff *tcp_stream_alloc_skb(struct sock *sk, int size, gfp_t gfp,
                                     bool force_schedule);
 
-void tcp_enter_quickack_mode(struct sock *sk, unsigned int max_quickacks);
 static inline void tcp_dec_quickack_mode(struct sock *sk,
                                         const unsigned int pkts)
 {

diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index e2d3ea2..c697836 100644 (file)
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -287,7 +287,7 @@ static void tcp_incr_quickack(struct sock *sk, unsigned int max_quickacks)
                icsk->icsk_ack.quick = quickacks;
 }
 
-void tcp_enter_quickack_mode(struct sock *sk, unsigned int max_quickacks)
+static void tcp_enter_quickack_mode(struct sock *sk, unsigned int max_quickacks)
 {
        struct inet_connection_sock *icsk = inet_csk(sk);
 
@@ -295,7 +295,6 @@ void tcp_enter_quickack_mode(struct sock *sk, unsigned int max_quickacks)
        inet_csk_exit_pingpong_mode(sk);
        icsk->icsk_ack.ato = TCP_ATO_MIN;
 }
-EXPORT_SYMBOL(tcp_enter_quickack_mode);
 
 /* Send ACKs quickly, if "quick" count is not exhausted
  * and the session is not interactive.