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Commit 825bae5d authored by Rick Jones's avatar Rick Jones Committed by David S. Miller
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arp: Do not perturb drop profiles with ignored ARP packets 



We do not wish to disturb dropwatch or perf drop profiles with an ARP
we will ignore.

Signed-off-by: default avatarRick Jones <rick.jones2@hp.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 18d0264f

net/ipv4/arp.c

+5 −1
Original line number Diff line number Diff line
@@ -953,10 +953,11 @@ static int arp_rcv(struct sk_buff *skb, struct net_device *dev, 
{

	const struct arphdr *arp;



	/* do not tweak dropwatch on an ARP we will ignore */

	if (dev->flags & IFF_NOARP ||

	    skb->pkt_type == PACKET_OTHERHOST ||

	    skb->pkt_type == PACKET_LOOPBACK)

		goto freeskb;

		goto consumeskb;



	skb = skb_share_check(skb, GFP_ATOMIC);

	if (!skb)
@@ -974,6 +975,9 @@ static int arp_rcv(struct sk_buff *skb, struct net_device *dev, 


	return NF_HOOK(NFPROTO_ARP, NF_ARP_IN, skb, dev, NULL, arp_process);



consumeskb:

	consume_skb(skb);

	return 0;

freeskb:

	kfree_skb(skb);

out_of_mem: