From d48d40a09127dfcb1f073c3e44de4b858393ae9e Mon Sep 17 00:00:00 2001
From: Vasily Khoruzhick <anarsoul@gmail.com>
Date: Mon, 14 May 2018 08:34:36 -0700
Subject: [PATCH] net: nfs: don't fail when nfs_read_reply returns
-NFS_RPC_DROP
That can happen if duplicate UDP packet arrived, and that's not uncommon.
Anyway, we ignore packets with rpc_id lower than last we sent for other
requests, so it makes sense to do that for read request as well.
Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
---
net/nfs.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/net/nfs.c b/net/nfs.c
index 83ed0a7c37..9a16765ba1 100644
--- a/net/nfs.c
+++ b/net/nfs.c
@@ -822,6 +822,8 @@ static void nfs_handler(uchar *pkt, unsigned dest, struct in_addr sip,
case STATE_READ_REQ:
rlen = nfs_read_reply(pkt, len);
+ if (rlen == -NFS_RPC_DROP)
+ break;
net_set_timeout_handler(nfs_timeout, nfs_timeout_handler);
if (rlen > 0) {
nfs_offset += rlen;
--
2.39.5