gazelle reduce copy in send

(cherry picked from commit c8a10af7468988f907c7f4d069519b7272cb98b4)

0019-gazelle-reduce-copy-in-send.patch

@@ -0,0 +1,50 @@
+From 05bfdb54fc744d835c8b3b50b54d220fe7e87277 Mon Sep 17 00:00:00 2001
+From: wuchangsheng <wuchangsheng2@huawei.com>
+Date: Mon, 7 Mar 2022 21:10:06 +0800
+Subject: [PATCH] reduce copy in send
+
+---
+ src/core/pbuf.c         | 5 +++++
+ src/include/lwip/pbuf.h | 3 +++
+ 2 files changed, 8 insertions(+)
+
+diff --git a/src/core/pbuf.c b/src/core/pbuf.c
+index 27afc28..cd6b558 100644
+--- a/src/core/pbuf.c
++++ b/src/core/pbuf.c
+@@ -281,6 +281,10 @@ pbuf_alloc(pbuf_layer layer, u16_t length, pbuf_type type)
+       }
+ 
+       /* If pbuf is to be allocated in RAM, allocate memory for it. */
++#if USE_LIBOS
++      /* alloc mbuf to reduce copy in sending */
++      p = lwip_alloc_pbuf(layer, length, type);
++#else
+       p = (struct pbuf *)mem_malloc(alloc_len);
+       if (p == NULL) {
+         return NULL;
+@@ -289,6 +293,7 @@ pbuf_alloc(pbuf_layer layer, u16_t length, pbuf_type type)
+                              length, length, type, 0);
+       LWIP_ASSERT("pbuf_alloc: pbuf->payload properly aligned",
+                   ((mem_ptr_t)p->payload % MEM_ALIGNMENT) == 0);
++#endif
+       break;
+     }
+     default:
+diff --git a/src/include/lwip/pbuf.h b/src/include/lwip/pbuf.h
+index e5daf96..3894574 100644
+--- a/src/include/lwip/pbuf.h
++++ b/src/include/lwip/pbuf.h
+@@ -272,6 +272,9 @@ void pbuf_free_ooseq(void);
+ /* Initializes the pbuf module. This call is empty for now, but may not be in future. */
+ #define pbuf_init()
+ 
++#if USE_LIBOS
++struct pbuf *lwip_alloc_pbuf(pbuf_layer l, u16_t length, pbuf_type type);
++#endif
+ struct pbuf *pbuf_alloc(pbuf_layer l, u16_t length, pbuf_type type);
+ struct pbuf *pbuf_alloc_reference(void *payload, u16_t length, pbuf_type type);
+ #if LWIP_SUPPORT_CUSTOM_PBUF
+-- 
+2.30.0
+

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: 5
+Release: 6
 License: BSD
 URL:     http://savannah.nongnu.org/projects/lwip/
 Source0: http://download.savannah.nongnu.org/releases/lwip/%{name}-%{version}.tar.gz
@@ -27,6 +27,7 @@ Patch9014:  0015-fix-tcp-port-alloc-issue.patch
 Patch9015:  0016-lstack-support-mysql-mode.patch
 Patch9016:  0017-support-REUSEPOR-option.patch
 Patch9017:  0018-exec-gazelle_init_sock-before-read-event.patch
+Patch9018:  0019-gazelle-reduce-copy-in-send.patch
 
 BuildRequires: gcc-c++ dos2unix dpdk-devel
 
@@ -38,28 +39,9 @@ ExclusiveArch: x86_64 aarch64
 lwip is a small independent implementation of the TCP/IP protocol suite.
 
 %prep
-%setup -n %{name}-%{version} -q
+%autosetup -n %{name}-%{version} -p1
 find %{_builddir}/%{name}-%{version} -type f -exec dos2unix -q {} \;
 
-%patch9000 -p1
-%patch9001 -p1
-%patch9002 -p1
-%patch9003 -p1
-%patch9004 -p1
-%patch9005 -p1
-%patch9006 -p1
-%patch9007 -p1
-%patch9008 -p1
-%patch9009 -p1
-%patch9010 -p1
-%patch9011 -p1
-%patch9012 -p1
-%patch9013 -p1
-%patch9014 -p1
-%patch9015 -p1
-%patch9016 -p1
-%patch9017 -p1
-
 %build
 cd %{_builddir}/%{name}-%{version}/src
 %make_build
@@ -74,6 +56,9 @@ cd %{_builddir}/%{name}-%{version}/src
 %{_libdir}/liblwip.a
 
 %changelog
+* Mon Mar 07 2022 wu-changsheng<wuchangsheng2@huawei.com> - 2.1.3-6
+- gazelle reduce copy in send
+
 * Mon Mar 07 2022 jiangheng<jiangheng12@huawei.com> - 2.1.3-5
 - exec gazelle_sock_init before read event