diff options
Diffstat (limited to 'net/ipv4/arp.c')
| -rw-r--r-- | net/ipv4/arp.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c index a648fff71ea7..5cfc1c939673 100644 --- a/net/ipv4/arp.c +++ b/net/ipv4/arp.c @@ -864,7 +864,7 @@ static int arp_process(struct net *net, struct sock *sk, struct sk_buff *skb) (arp_fwd_proxy(in_dev, dev, rt) || arp_fwd_pvlan(in_dev, dev, rt, sip, tip) || (rt->dst.dev != dev && - pneigh_lookup(&arp_tbl, net, &tip, dev, 0)))) { + pneigh_lookup(&arp_tbl, net, &tip, dev)))) { n = neigh_event_ns(&arp_tbl, sha, &sip, dev); if (n) neigh_release(n); @@ -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; } @@ -1085,9 +1089,7 @@ static int arp_req_set_public(struct net *net, struct arpreq *r, if (mask) { __be32 ip = ((struct sockaddr_in *)&r->arp_pa)->sin_addr.s_addr; - if (!pneigh_lookup(&arp_tbl, net, &ip, dev, 1)) - return -ENOBUFS; - return 0; + return pneigh_create(&arp_tbl, net, &ip, dev, 0, 0, false); } return arp_req_set_proxy(net, dev, 1); |