expand rcv wnd and prefetch

0042-expand-recv-win.patch

@@ -0,0 +1,39 @@
+From 288d56ebd68f366d3fa2ee1521120016fb21bf31 Mon Sep 17 00:00:00 2001
+From: wuchangsheng <wuchangsheng2@huawei.com>
+Date: Sat, 17 Dec 2022 19:14:36 +0800
+Subject: [PATCH 1/2] expand recv win
+
+---
+ src/include/lwip/opt.h | 2 +-
+ src/include/lwipopts.h | 2 +-
+ 2 files changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/src/include/lwip/opt.h b/src/include/lwip/opt.h
+index 9d41a09..718816b 100644
+--- a/src/include/lwip/opt.h
++++ b/src/include/lwip/opt.h
+@@ -1483,7 +1483,7 @@
+  */
+ #if !defined LWIP_WND_SCALE || defined __DOXYGEN__
+ #define LWIP_WND_SCALE                  1
+-#define TCP_RCV_SCALE                   0
++#define TCP_RCV_SCALE                   6
+ #endif
+ 
+ /**
+diff --git a/src/include/lwipopts.h b/src/include/lwipopts.h
+index d7b9635..907c630 100644
+--- a/src/include/lwipopts.h
++++ b/src/include/lwipopts.h
+@@ -95,7 +95,7 @@
+ 
+ #define TCP_MSS (FRAME_MTU - IP_HLEN - TCP_HLEN)
+ 
+-#define TCP_WND (40 * TCP_MSS)
++#define TCP_WND (2500 * TCP_MSS)
+ 
+ #define TCP_SND_BUF (2500 * TCP_MSS)
+ 
+-- 
+2.8.4.windows.1
+

0043-add-prefetch.patch

@@ -0,0 +1,62 @@
+From 3d63cb611a0b7a3cde0bb9e74b0ec83501966c51 Mon Sep 17 00:00:00 2001
+From: wuchangsheng <wuchangsheng2@huawei.com>
+Date: Sun, 18 Dec 2022 18:50:33 +0800
+Subject: [PATCH 2/2] add prefetch
+
+---
+ src/core/pbuf.c    | 7 +++++++
+ src/core/tcp_out.c | 6 ++++++
+ 2 files changed, 13 insertions(+)
+
+diff --git a/src/core/pbuf.c b/src/core/pbuf.c
+index 404c8a7..ad75aa6 100644
+--- a/src/core/pbuf.c
++++ b/src/core/pbuf.c
+@@ -83,6 +83,9 @@
+ #if LWIP_CHECKSUM_ON_COPY
+ #include "lwip/inet_chksum.h"
+ #endif
++#if USE_LIBOS
++#include <rte_prefetch.h>
++#endif
+ 
+ #include <string.h>
+ 
+@@ -750,6 +753,10 @@ pbuf_free(struct pbuf *p)
+   /* de-allocate all consecutive pbufs from the head of the chain that
+    * obtain a zero reference count after decrementing*/
+   while (p != NULL) {
++#if USE_LIBOS
++    if (p->next)
++      rte_prefetch0(p->next);
++#endif
+     LWIP_PBUF_REF_T ref;
+     SYS_ARCH_DECL_PROTECT(old_level);
+     /* Since decrementing ref cannot be guaranteed to be a single machine operation
+diff --git a/src/core/tcp_out.c b/src/core/tcp_out.c
+index 55053d8..3c4dc4b 100644
+--- a/src/core/tcp_out.c
++++ b/src/core/tcp_out.c
+@@ -82,6 +82,7 @@
+ 
+ #if USE_LIBOS
+ #include "lwipsock.h"
++#include <rte_prefetch.h>
+ #if CHECKSUM_GEN_TCP_HW
+ #include "dpdk_cksum.h"
+ #endif
+@@ -1762,6 +1763,11 @@ tcp_output_segment(struct tcp_seg *seg, struct tcp_pcb *pcb, struct netif *netif
+   }
+ #endif
+ 
++#if USE_LIBOS
++  /* pbuf into mbuf. ref dpdk_common.h */
++  rte_prefetch0((uint8_t *)(seg->p) - sizeof(struct rte_mbuf) - sizeof(uint64_t) * 2);
++#endif
++
+   /* Set retransmission timer running if it is not currently enabled
+      This must be set before checking the route. */
+   if (pcb->rtime < 0) {
+-- 
+2.8.4.windows.1
+

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: 30
+Release: 31
 License: BSD
 URL:     http://savannah.nongnu.org/projects/lwip/
 Source0: http://download.savannah.nongnu.org/releases/lwip/%{name}-%{version}.zip
@@ -53,6 +53,8 @@ Patch9037:  0038-add-tso.patch
 Patch9038:  0039-optimize-app-thread-write-buff-block.patch
 Patch9039:  0040-add-huge-snd_buf.patch
 Patch9040:  0041-optimite-pcb-list-limit-send-size-and-ack-now.patch
+Patch9041:  0042-expand-recv-win.patch
+Patch9042:  0043-add-prefetch.patch
 
 BuildRequires: gcc-c++ dos2unix dpdk-devel
 
@@ -110,6 +112,8 @@ find %{_builddir}/%{name}-%{version} -type f -exec dos2unix -q {} \;
 %patch9038 -p1
 %patch9039 -p1
 %patch9040 -p1
+%patch9041 -p1
+%patch9042 -p1
 
 %build
 cd %{_builddir}/%{name}-%{version}/src
@@ -125,6 +129,9 @@ cd %{_builddir}/%{name}-%{version}/src
 %{_libdir}/liblwip.a
 
 %changelog
+* Sun Dec 18 2022 wuchangsheng<wuchangsheng2@huawei.com> - 2.1.3-31
+- expand rcv wnd size and add prefetch
+
 * Tue Dec 13 2022 wuchangsheng<wuchangsheng2@huawei.com> - 2.1.3-30
 - optimite pcb unsent and unacked list
   fast rexmit all pkts