netpoll: Should handle ETH_P_ARP other than ETH_P_IP in netpoll_neigh_reply

[ Upstream commit b0dd663b60944a3ce86430fa35549fb37968bda0 ]

The received ARP request type in the Ethernet packet head is ETH_P_ARP other than ETH_P_IP.

[ Bug introduced by commit b7394d2429c198b1da3d46ac39192e891029ec0f
  ("netpoll: prepare for ipv6") ]

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index cec074be8c4378b56a01889165d55cc282808208..1a8666ba4ef76a0427e044cf773a496147928db5 100644 (file)
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -550,7 +550,7 @@ static void netpoll_neigh_reply(struct sk_buff *skb, struct netpoll_info *npinfo
                return;
 
        proto = ntohs(eth_hdr(skb)->h_proto);
-       if (proto == ETH_P_IP) {
+       if (proto == ETH_P_ARP) {
                struct arphdr *arp;
                unsigned char *arp_ptr;
                /* No arp on this interface */