tcp_in: fix ooseq update error

backport-tcp_in-fix-ooseq-update-error.patch

@@ -0,0 +1,39 @@
+From 574bd6e5aa57b971db7b347b8ad761342be9a02c Mon Sep 17 00:00:00 2001
+From: duckpowerMB <ericwudesigner@gmail.com>
+Date: Thu, 9 Sep 2021 16:52:55 +0800
+Subject: [PATCH] tcp_in : fix ooseq update error
+
+if a pbuf received with the same seqno in ooseq ,
+we then check  the size and replace the existing one
+with the larger one,but if the existing one is the
+last segment in ooseq ,it might has been trimed before.
+the replacing action will overrun our receive windows
+
+see patch #10106 and bug #56397
+---
+ src/core/tcp_in.c | 9 +++++++++
+ 1 file changed, 9 insertions(+)
+
+diff --git a/src/core/tcp_in.c b/src/core/tcp_in.c
+index c7a1f7b7..de64464d 100644
+--- a/src/core/tcp_in.c
++++ b/src/core/tcp_in.c
+@@ -1687,6 +1687,15 @@ tcp_receive(struct tcp_pcb *pcb)
+                  ->ooseq. We check the lengths to see which one to
+                  discard. */
+               if (inseg.len > next->len) {
++
++                /* If next segment is the last segment in ooseq
++                   and smaller than inseg, that means it has been
++                   trimmed before to fit our window, so we just
++                   break here. */
++                if (next->next == NULL) {
++                  break;
++                }
++
+                 /* The incoming segment is larger than the old
+                    segment. We replace some segments with the new
+                    one. */
+-- 
+2.27.0
+

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: 103
+Release: 104
 License: BSD
 URL:     http://savannah.nongnu.org/projects/lwip/
 Source0: http://download.savannah.nongnu.org/releases/lwip/%{name}-%{version}.zip
@@ -114,6 +114,8 @@ Patch9096:  0097-Mod-the-issue-that-2w-connection-unable-to-establish.patch
 Patch9097:  0098-remove-duplicate-lwip-log.patch
 Patch9098:  0099-fix-rte_ring_create-time-consuming.patch
 
+Patch6005:  backport-tcp_in-fix-ooseq-update-error.patch
+
 BuildRequires: gcc-c++ dos2unix dpdk-devel
 
 #Requires: 
@@ -143,6 +145,9 @@ cd %{_builddir}/%{name}-%{version}/src
 %{_libdir}/liblwip.a
 
 %changelog
+* Tue Jan 02 2024 jiangheng <jiangheng14@huawei.com> - 2.1.3-104
+- tcp_in: fix ooseq update error
+
 * Fri Dec 29 2023 jiangheng <jiangheng14@huawei.com> - 2.1.3-103
 - rte_ring_get_memsize adapt dpdk 19.11