arp: fixed error in a comment

the is_garp code deals just with gratuitous ARP packets, not every
unsolicited packet.

This patch is a result of a discussion in netdev:
http://marc.info/?l=linux-netdev&m=149506354216994

Suggested-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Ihar Hrachyshka <ihrachys@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c
index d54345a..053492a 100644 (file)
--- a/net/ipv4/arp.c
+++ b/net/ipv4/arp.c
@@ -846,7 +846,7 @@ static int arp_process(struct net *net, struct sock *sk, struct sk_buff *skb)
                 */
                is_garp = tip == sip && addr_type == RTN_UNICAST;
 
-               /* Unsolicited ARP _replies_ also require target hwaddr to be
+               /* Gratuitous ARP _replies_ also require target hwaddr to be
                 * the same as source.
                 */
                if (is_garp && arp->ar_op == htons(ARPOP_REPLY))