[U-Boot] [PATCH] net: nfs: don't fail when nfs_read_reply returns -NFS_RPC_DROP

[Vasily Khoruzhick]

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 at gmail.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;
-- 
2.17.0