From 30f5815c847060c5ad4075e81581771b8d0cbb72 Mon Sep 17 00:00:00 2001
From: Lemmy Huang <huangliming5@huawei.com>
Date: Thu, 8 Jun 2023 15:15:07 +0800
Subject: [PATCH] optimize: avoid too many empty acks in tcp_input

Signed-off-by: Lemmy Huang <huangliming5@huawei.com>
---
 src/core/tcp_in.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/src/core/tcp_in.c b/src/core/tcp_in.c
index 7e7d70ab..0abee303 100644
--- a/src/core/tcp_in.c
+++ b/src/core/tcp_in.c
@@ -1807,11 +1807,7 @@ tcp_receive(struct tcp_pcb *pcb)
 
 
         /* Acknowledge the segment(s). */
-        if (flags & TCP_PSH) {
-            tcp_ack_now(pcb);
-        } else {
-            tcp_ack(pcb);
-        }
+        tcp_ack(pcb);
 
 #if LWIP_TCP_SACK_OUT
         if (LWIP_TCP_SACK_VALID(pcb, 0)) {
-- 
2.22.0.windows.1