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>
This commit is contained in:
Vasily Khoruzhick 2018-05-14 08:34:36 -07:00 committed by Joe Hershberger
parent 286bea2e85
commit d48d40a091

View file

@ -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;