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net: arp: use kfree_skb_reason() in arp_rcv()

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Replace kfree_skb() with kfree_skb_reason() in arp_rcv().

Signed-off-by: Qiu Yutan <qiu.yutan@zte.com.cn>
Signed-off-by: Jiang Kun <jiang.kun2@zte.com.cn>
Link: https://patch.msgid.link/20250612110259698Q2KNNOPQhnIApRskKN3Hi@zte.com.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Qiu Yutan
2025-06-12 11:02:59 +08:00
committed by Jakub Kicinski
parent a7075659f7
commit 0051ea4aca
1 changed files with 7 additions and 3 deletions
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10
net/ipv4/arp.c
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@@ -966,6 +966,7 @@ static int arp_is_multicast(const void *pkey)
static int arp_rcv(struct sk_buff *skb, struct net_device *dev,
struct packet_type *pt, struct net_device *orig_dev)
{
enum skb_drop_reason drop_reason;
const struct arphdr *arp;
/* do not tweak dropwatch on an ARP we will ignore */
@@ -979,12 +980,15 @@ static int arp_rcv(struct sk_buff *skb, struct net_device *dev,
goto out_of_mem;
/* ARP header, plus 2 device addresses, plus 2 IP addresses. */
if (!pskb_may_pull(skb, arp_hdr_len(dev)))
drop_reason = pskb_may_pull_reason(skb, arp_hdr_len(dev));
if (drop_reason != SKB_NOT_DROPPED_YET)
goto freeskb;
arp = arp_hdr(skb);
if (arp->ar_hln != dev->addr_len || arp->ar_pln != 4)
if (arp->ar_hln != dev->addr_len || arp->ar_pln != 4) {
drop_reason = SKB_DROP_REASON_NOT_SPECIFIED;
goto freeskb;
}
memset(NEIGH_CB(skb), 0, sizeof(struct neighbour_cb));
@@ -996,7 +1000,7 @@ consumeskb:
consume_skb(skb);
return NET_RX_SUCCESS;
freeskb:
kfree_skb(skb);
kfree_skb_reason(skb, drop_reason);
out_of_mem:
return NET_RX_DROP;
}