From 17ca476c2403391d7ac1f403e62440798aa92f5e Mon Sep 17 00:00:00 2001
From: luwenpeng <luwenpeng@geedgenetworks.com>
Date: Thu, 25 Apr 2024 15:39:02 +0800
Subject: [PATCH] tcp session record last packet tcp payload length used to
 calculate seq of injected RST packets

---
 src/session/session_manager.cpp | 1 +
 src/session/session_priv.h      | 1 +
 2 files changed, 2 insertions(+)

diff --git a/src/session/session_manager.cpp b/src/session/session_manager.cpp
index efb0c86..7d51a26 100644
--- a/src/session/session_manager.cpp
+++ b/src/session/session_manager.cpp
@@ -293,6 +293,7 @@ static void tcp_update(struct session_manager *mgr, struct session *sess, enum s
      half->flags |= flags;
      half->seq = tcp_hdr_get_seq(hdr);
      half->ack = tcp_hdr_get_ack(hdr);
+     half->len = tcp_layer->pld_len;
 
      if (!mgr->opts.tcp_reassembly_enable)
      {
diff --git a/src/session/session_priv.h b/src/session/session_priv.h
index 5ec619d..558da08 100644
--- a/src/session/session_priv.h
+++ b/src/session/session_priv.h
@@ -28,6 +28,7 @@ struct tcp_half
 
     uint32_t seq;
     uint32_t ack;
+    uint16_t len;
     uint8_t flags;
 };