转自：http://blog.chinaunix.net/uid-546544-id-2096102.html

 

有这样两个宏可以方便地打印mac地址：

#define MAC_FMT "%02x:%02x:%02x:%02x:%02x:%02x"

#define MAC_ARG(x) ((u8*)(x))[0],((u8*)(x))[1],((u8*)(x))[2],((u8*)(x))[3],((u8*)(x))[4],((u8*)(x))[5]

使用样例如下：

struct ethhdr *eh = (struct ethhdr *)skb->mac.raw;

printk(KERN_INFO "SOURCE:" MAC_FMT "\n", MAC_ARG(eh->h_source));

printk(KERN_INFO "DEST:" MAC_FMT "\n", MAC_ARG(eh->h_dest));