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authorPavel Emelyanov <xemul@openvz.org>2008-03-03 12:20:57 -0800
committerDavid S. Miller <davem@davemloft.net>2008-03-03 12:20:57 -0800
commit988b705077d8f922408913f4f521ae073256d4a1 (patch)
tree9b57725b954e1e96a80043ed43d83f8e032b47b6 /net/core
parent8ed7edce82ca0d8d3adba8c08cd42337af6c758c (diff)
[ARP]: Introduce the arp_hdr_len helper.
There are some place, that calculate the ARP header length. These calculations are correct, but a) some operate with "magic" constants, b) enlarge the code length (sometimes at the cost of coding style), c) are not informative from the first glance. The proposal is to introduce a helper, that includes all the good sides of these calculations. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
-rw-r--r--net/core/netpoll.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index 6faa128a4c8..7ae98659d79 100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -384,9 +384,7 @@ static void arp_reply(struct sk_buff *skb)
if (skb->dev->flags & IFF_NOARP)
return;
- if (!pskb_may_pull(skb, (sizeof(struct arphdr) +
- (2 * skb->dev->addr_len) +
- (2 * sizeof(u32)))))
+ if (!pskb_may_pull(skb, arp_hdr_len(skb->dev)))
return;
skb_reset_network_header(skb);
@@ -414,7 +412,7 @@ static void arp_reply(struct sk_buff *skb)
ipv4_is_loopback(tip) || ipv4_is_multicast(tip))
return;
- size = sizeof(struct arphdr) + 2 * (skb->dev->addr_len + 4);
+ size = arp_hdr_len(skb->dev);
send_skb = find_skb(np, size + LL_RESERVED_SPACE(np->dev),
LL_RESERVED_SPACE(np->dev));