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net: neigh: add skb drop reasons to arp_error_report()

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When neighbour become invalid or destroyed, neigh_invalidate() will be
called. neigh->ops->error_report() will be called if the neighbour's
state is NUD_FAILED, and seems here is the only use of error_report().
So we can tell that the reason of skb drops in arp_error_report() is
SKB_DROP_REASON_NEIGH_FAILED.

Replace kfree_skb() used in arp_error_report() with kfree_skb_reason().

Reviewed-by: Mengen Sun <mengensun@tencent.com>
Reviewed-by: Hao Peng <flyingpeng@tencent.com>
Signed-off-by: Menglong Dong <imagedong@tencent.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Menglong Dong 2022-02-26 12:18:31 +08:00 committed by David S. Miller
parent a5736edda1
commit 56d4b4e48a
1 changed files with 1 additions and 1 deletions
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2
net/ipv4/arp.c
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@ -293,7 +293,7 @@ static int arp_constructor(struct neighbour *neigh)
static void arp_error_report(struct neighbour *neigh, struct sk_buff *skb)
{
dst_link_failure(skb);
kfree_skb(skb);
kfree_skb_reason(skb, SKB_DROP_REASON_NEIGH_FAILED);
}
/* Create and send an arp packet. */