diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/if_arp.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/if_arp.h b/include/linux/if_arp.h index 296e8e86e91..4d3401812e6 100644 --- a/include/linux/if_arp.h +++ b/include/linux/if_arp.h @@ -156,6 +156,12 @@ static inline struct arphdr *arp_hdr(const struct sk_buff *skb) { return (struct arphdr *)skb_network_header(skb); } + +static inline int arp_hdr_len(struct net_device *dev) +{ + /* ARP header, plus 2 device addresses, plus 2 IP addresses. */ + return sizeof(struct arphdr) + (dev->addr_len + sizeof(u32)) * 2; +} #endif #endif /* _LINUX_IF_ARP_H */ |