From 241c72599d7da72ada7cc15da90b7309e74241ea Mon Sep 17 00:00:00 2001
From: wu-changsheng <wuchangsheng2@huawei.com>
Date: Sat, 24 Sep 2022 21:48:12 +0800
Subject: [PATCH 11/21] fix sendmsg data write wrong

---
 src/lstack/core/lstack_lwip.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/lstack/core/lstack_lwip.c b/src/lstack/core/lstack_lwip.c
index 5174e4c..d1e09ce 100644
--- a/src/lstack/core/lstack_lwip.c
+++ b/src/lstack/core/lstack_lwip.c
@@ -526,7 +526,12 @@ ssize_t sendmsg_to_stack(int32_t s, const struct msghdr *message, int32_t flags)
         if (ret < 0) {
             return buflen == 0 ? ret : buflen;
         }
+
         buflen += ret;
+
+        if (ret < message->msg_iov[i].iov_len) {
+            return buflen;
+        }
     }
 
     return buflen;
-- 
2.23.0