From 960b4bb2a7937cc64e55a3d06ae9644642d43ddb Mon Sep 17 00:00:00 2001
From: chao an <anchao@xiaomi.com>
Date: Wed, 7 Dec 2022 22:09:10 +0800
Subject: [PATCH] net/devif: initialize d_len to 0 before polling connections

Signed-off-by: chao an <anchao@xiaomi.com>
---
 net/devif/devif_poll.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/net/devif/devif_poll.c b/net/devif/devif_poll.c
index d8561f2124f..4b4d42a4a15 100644
--- a/net/devif/devif_poll.c
+++ b/net/devif/devif_poll.c
@@ -647,6 +647,10 @@ static int devif_poll_connections(FAR struct net_driver_s *dev,
 {
   int bstop = false;
 
+  /* Reset device buffer length */
+
+  dev->d_len = 0;
+
   /* Traverse all of the active packet connections and perform the poll
    * action.
    */