diff --git a/0028-per-thread-reassdata-variables.patch b/0028-per-thread-reassdata-variables.patch
new file mode 100644
index 0000000000000000000000000000000000000000..28eff780779b12f2507977f0c405f9dc53453516
--- /dev/null
+++ b/0028-per-thread-reassdata-variables.patch
@@ -0,0 +1,30 @@
+From a554661e9dd189f2d4b5dee8970fd009db89d9aa Mon Sep 17 00:00:00 2001
+From: wuchangsheng <wuchangsheng2@huawei.com>
+Date: Thu, 6 Oct 2022 17:33:16 +0800
+Subject: [PATCH] per thread reassdata variables
+
+---
+ src/core/ipv4/ip4_frag.c | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+diff --git a/src/core/ipv4/ip4_frag.c b/src/core/ipv4/ip4_frag.c
+index 17a4ccd..c60523d 100644
+--- a/src/core/ipv4/ip4_frag.c
++++ b/src/core/ipv4/ip4_frag.c
+@@ -115,8 +115,13 @@ PACK_STRUCT_END
+    IPH_ID(iphdrA) == IPH_ID(iphdrB)) ? 1 : 0
+ 
+ /* global variables */
++#if USE_LIBOS
++static PER_THREAD struct ip_reassdata *reassdatagrams;
++static PER_THREAD u16_t ip_reass_pbufcount;
++#else
+ static struct ip_reassdata *reassdatagrams;
+ static u16_t ip_reass_pbufcount;
++#endif
+ 
+ /* function prototypes */
+ static void ip_reass_dequeue_datagram(struct ip_reassdata *ipr, struct ip_reassdata *prev);
+-- 
+2.27.0
+
diff --git a/lwip.spec b/lwip.spec
index 0ea170cf87945433cb6a9ba6dd5928ddfaf147a7..dd72c372aaaba1a761879f843831138893537b91 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: 15
+Release: 16
 License: BSD
 URL:     http://savannah.nongnu.org/projects/lwip/
 Source0: http://download.savannah.nongnu.org/releases/lwip/%{name}-%{version}.tar.gz
@@ -39,6 +39,7 @@ Patch9023:  0024-refactor-pkt-read-send-performance.patch
 Patch9024:  0025-Replace-gettid-with-syscall-SYS_gettid.patch
 Patch9025:  0026-del-redundant-wait_close-and-move-epoll_events-pos.patch
 Patch9026:  0027-modify-EISCONN-condition.patch
+Patch9027:  0028-per-thread-reassdata-variables.patch
 
 BuildRequires: gcc-c++ dos2unix dpdk-devel
 
@@ -67,6 +68,9 @@ cd %{_builddir}/%{name}-%{version}/src
 %{_libdir}/liblwip.a
 
 %changelog
+* Thu Oct 6 2022 wuchangsheng<wuchangsheng2@huawei.com> - 2.1.3-16
+- per thread reassdata variables
+
 * Thu Oct 6 2022 wuchangsheng<wuchangsheng2@huawei.com> - 2.1.3-15
 - modify EISCONN path condition
   add in_send and send_flag value in sock