diff --git a/0051-lwip-add-need_tso_send.patch b/0051-lwip-add-need_tso_send.patch
new file mode 100644
index 0000000..5e45768
--- /dev/null
+++ b/0051-lwip-add-need_tso_send.patch
@@ -0,0 +1,76 @@
+From 590873482f9b6a5e2635a95720acb37b5f516ab0 Mon Sep 17 00:00:00 2001
+From: kircher <majun65@huawei.com>
+Date: Tue, 21 Feb 2023 15:05:41 +0800
+Subject: [PATCH] lwip add need_tso_send
+
+---
+ src/api/api_msg.c      | 1 +
+ src/core/tcp_out.c     | 5 ++++-
+ src/include/lwip/tcp.h | 2 ++
+ 3 files changed, 7 insertions(+), 1 deletion(-)
+
+diff --git a/src/api/api_msg.c b/src/api/api_msg.c
+index 1fedaad..3a4a473 100644
+--- a/src/api/api_msg.c
++++ b/src/api/api_msg.c
+@@ -1744,6 +1744,7 @@ lwip_netconn_do_writemore(struct netconn *conn  WRITE_DELAYED_PARAM)
+       write_more = 0;
+       err = tcp_write(conn->pcb.tcp, conn->current_msg->msg.w.vector->ptr, len, apiflags);
+       conn->current_msg->msg.w.len = len;
++      conn->pcb.tcp->need_tso_send = 1;
+ #else
+       err = tcp_write(conn->pcb.tcp, dataptr, len, apiflags);
+ #endif
+diff --git a/src/core/tcp_out.c b/src/core/tcp_out.c
+index c538f2a..bf23381 100644
+--- a/src/core/tcp_out.c
++++ b/src/core/tcp_out.c
+@@ -1473,7 +1473,7 @@ tcp_output(struct tcp_pcb *pcb)
+ 
+   u32_t send_len = 0;
+ #if USE_LIBOS
+-  if (get_eth_params_tx_ol() & DEV_TX_OFFLOAD_TCP_TSO) {
++  if ((get_eth_params_tx_ol() & DEV_TX_OFFLOAD_TCP_TSO) && pcb->need_tso_send) {
+     while(seg && send_len < 0xffff) {
+       /**
+        * 1) walk unsent queue, find all seg witch wait to send. chain buf in these segs.
+@@ -1529,6 +1529,7 @@ tcp_output(struct tcp_pcb *pcb)
+         if (err != ERR_OK) {
+           if (pcb->unsent == NULL)
+             pcb->last_unsent = NULL;
++	  pcb->need_tso_send = 0;
+           return err;
+         }
+         pcb->unsent = seg->next;
+@@ -1552,6 +1553,7 @@ tcp_output(struct tcp_pcb *pcb)
+       pbuf_remove_header(new_seg.p, new_seg.p->tot_len - new_seg.len - TCPH_HDRLEN_BYTES(new_seg.tcphdr));
+       new_seg.p->tot_len = new_seg.p->len;
+     }
++  pcb->need_tso_send = 0;
+   } else
+ #endif
+ {
+@@ -1647,6 +1649,7 @@ tcp_output(struct tcp_pcb *pcb)
+ #endif /* TCP_OVERSIZE */
+ 
+ output_done:
++  pcb->need_tso_send = 0;
+   if (pcb->unsent == NULL)
+     pcb->last_unsent = NULL;
+   tcp_clear_flags(pcb, TF_NAGLEMEMERR);
+diff --git a/src/include/lwip/tcp.h b/src/include/lwip/tcp.h
+index 0b65b01..2fc683d 100644
+--- a/src/include/lwip/tcp.h
++++ b/src/include/lwip/tcp.h
+@@ -409,6 +409,8 @@ struct tcp_pcb {
+   u8_t snd_scale;
+   u8_t rcv_scale;
+ #endif
++
++  u8_t need_tso_send;
+ };
+ 
+ #if TCP_PCB_HASH
+-- 
+2.33.0
+
diff --git a/lwip.spec b/lwip.spec
index de1397c..c9ebdfb 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: 41
+Release: 42
 License: BSD
 URL:     http://savannah.nongnu.org/projects/lwip/
 Source0: http://download.savannah.nongnu.org/releases/lwip/%{name}-%{version}.zip
@@ -62,6 +62,7 @@ Patch9046:  0047-reduce-struct-pbuf-size.patch
 Patch9047:  0048-listen-pcb-also-use-pcb_if.patch
 Patch9048:  0049-expand-recv-mbox-size.patch
 Patch9049:  0050-lwip-reuse-ip-port.patch
+Patch9050:  0051-lwip-add-need_tso_send.patch
 
 BuildRequires: gcc-c++ dos2unix dpdk-devel
 
@@ -127,7 +128,8 @@ find %{_builddir}/%{name}-%{version} -type f -exec dos2unix -q {} \;
 %patch9046 -p1
 %patch9047 -p1
 %patch9048 -p1
-#%patch9049 -p1
+%patch9049 -p1
+%patch9050 -p1
 
 %build
 cd %{_builddir}/%{name}-%{version}/src
@@ -143,6 +145,9 @@ cd %{_builddir}/%{name}-%{version}/src
 %{_libdir}/liblwip.a
 
 %changelog
+* Tue Feb 21 2023 majun<majun65@huawei.com> - 2.1.3-42
+- add lwip need_tso_send
+
 * Tue Feb 14 2023 majun<majun65@huawei.com> - 2.1.3-41
 - add lwip reuse ip port