From 4e5a5f03497e563025543d89859a5825b732c8ce Mon Sep 17 00:00:00 2001
From: jiangheng12 <jiangheng14@huawei.com>
Date: Fri, 10 Mar 2023 19:40:18 +0800
Subject: [PATCH] reduce cpu usage when send

---
 0054-reduce-cpu-usage-when-send.patch | 32 +++++++++++++++++++++++++++
 lwip.spec                             |  7 +++++-
 2 files changed, 38 insertions(+), 1 deletion(-)
 create mode 100644 0054-reduce-cpu-usage-when-send.patch

diff --git a/0054-reduce-cpu-usage-when-send.patch b/0054-reduce-cpu-usage-when-send.patch
new file mode 100644
index 0000000..94f394f
--- /dev/null
+++ b/0054-reduce-cpu-usage-when-send.patch
@@ -0,0 +1,32 @@
+From d3d6f7fa6e755992fd4b75b56681b5e14aa8ba14 Mon Sep 17 00:00:00 2001
+From: jiangheng12 <jiangheng14@huawei.com>
+Date: Fri, 10 Mar 2023 19:32:48 +0800
+Subject: [PATCH] reduce cpu usage when send
+
+---
+ src/include/lwipsock.h | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/src/include/lwipsock.h b/src/include/lwipsock.h
+index f78c9cf..810e98f 100644
+--- a/src/include/lwipsock.h
++++ b/src/include/lwipsock.h
+@@ -33,6 +33,7 @@
+ #ifndef __LWIPSOCK_H__
+ #define __LWIPSOCK_H__
+ 
++#include <semaphore.h>
+ #include "lwip/opt.h"
+ #include "lwip/api.h"
+ 
+@@ -110,6 +111,7 @@ struct lwip_sock {
+   struct list_node send_list;
+   struct pbuf *send_lastdata;
+   struct pbuf *send_pre_del;
++  sem_t snd_ring_sem;
+ 
+   char pad3 __rte_cache_aligned;
+   /* nerver change */
+-- 
+2.23.0
+
diff --git a/lwip.spec b/lwip.spec
index dd9deb1..622bfb6 100644
--- a/lwip.spec
+++ b/lwip.spec
@@ -4,7 +4,7 @@
 Summary: lwip is a small independent implementation of the TCP/IP protocol suite
 Name:    lwip
 Version: 2.1.3
-Release: 44
+Release: 45
 License: BSD
 URL:     http://savannah.nongnu.org/projects/lwip/
 Source0: http://download.savannah.nongnu.org/releases/lwip/%{name}-%{version}.zip
@@ -65,6 +65,7 @@ Patch9049:  0050-lwip-reuse-ip-port.patch
 Patch9050:  0051-lwip-add-need_tso_send.patch
 Patch9051:  0052-lwip_fnctl-only-support-F_SETFL-F_GETFL.patch
 Patch9052:  0053-cleancode-improve-lwipopts.h-readability.patch
+Patch9053:  0054-reduce-cpu-usage-when-send.patch
 
 BuildRequires: gcc-c++ dos2unix dpdk-devel
 
@@ -134,6 +135,7 @@ find %{_builddir}/%{name}-%{version} -type f -exec dos2unix -q {} \;
 %patch9050 -p1
 %patch9051 -p1
 %patch9052 -p1
+%patch9053 -p1
 
 %build
 cd %{_builddir}/%{name}-%{version}/src
@@ -149,6 +151,9 @@ cd %{_builddir}/%{name}-%{version}/src
 %{_libdir}/liblwip.a
 
 %changelog
+* Fri Mar 10 2023 jiangheng <jiangheng14@huawei.com> - 2.1.3-45
+- reduce cpu usage when send
+
 * Thu Mar 9 2023 Lemmy Huang <huangliming5@huawei.com> - 2.1.3-44
 - cleancode: improve lwipopts.h readability